SKU: 1727971553
carbon based fertilizer for plants

carbon based fertilizer for plants Dennerle Carbo Care Pro

Sale price$25.12 Regular price$27.91
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Description

carbon based fertilizer for plants Dennerle Carbo Care ProCarbon (carbon dioxide) is the most important nutrient for aquarium plants. Around 40% of the dry mass of plants consists of it, but it is in short supply in aquariums. The result: poor plant growth. And when the plants grow poorly, the unwanted algae get their chance. Carbo Care Pro supplies all aquarium plants quickly and effectively with easily available carbon. All plants, from mosses to echinodorus and cryptocorynes to fast growing stem plants,

Carbon (carbon dioxide) is the most important nutrient for aquarium plants. Around 40% of the dry mass of plants consists of it, but it is in short supply in aquariums. The result: poor plant growth. And when the plants grow poorly, the unwanted algae get their chance. Carbo Care Pro supplies all aquarium plants quickly and effectively with easily available carbon. All plants, from mosses to echinodorus and cryptocorynes to fast-growing stem plants, become fuller and stronger. The leaves become significantly larger and more colorful. The success is visible after just a few weeks - pay attention to the shoot tips and the young leaves. The lush, healthy growth increases the plants' ability to compete with algae. Undesirable algae are thus pushed back. The entire aquarium appears healthier, greener and more beautiful.

How Carbo Care Pro works

The basis of plant metabolism is photosynthesis. In this biochemical process, solar energy is "captured" and stored in energy-rich carbon compounds. One such energy-rich compound is sugar. These compounds are used by the plant (a) as a universal energy source or (b) to produce other compounds. To stay with the sugar example: The plant can "burn" the sugar in its cells and use the released energy to drive other metabolic processes. Or it can process the sugar into cellulose, for example. Cellulose, also known as wood pulp, is the substance that gives trees their strength and consists of nothing other than long chains of sugar. How can the plant convert substances into one another? The central hub in plant metabolism is the so-called citric acid cycle. The citric acid cycle is like a factory. A wide variety of substances are introduced here to produce the required substances. With the help of this metabolic pathway, the plant can produce all vital carbon compounds itself: carbohydrates, fats, proteins, vitamins, secondary plant substances, etc. And this is exactly where Carbo Care Pro comes into play. The product contains selected active ingredients that also occur in plant metabolism in this or a similar form. The active ingredients are absorbed by the plant and used in the cells as building material for the construction of higher compounds or as an energy source. This additional supply allows the plant to grow faster and stronger. There is also another positive effect: all organic active ingredients based on carbon are bacterially degradable, because the numerous filter bacteria in the aquarium feed on them. In the end, only carbon dioxide (CO 2 ) and water remain. Carbo Care Pro therefore supplies the plants with vital carbon in two ways. The effect is visible after just a few weeks of regular use: the plants grow faster, more lush and healthier, and algae are pushed back.

Application/Dosage

Depending on plants and growth conditions: 2 – 4 ml per 100 L of aquarium water daily

Information on the ingredient glutaraldehyde

When dosed and used correctly, Carbo Care Pro is safe for all fish, plants, shrimps, snails, filter bacteria and other aquarium inhabitants, even when used long-term. The product had to undergo a long-term practical test in various aquariums and under various conditions. User safety is a very high priority at Dennerle. The old rule also applies to the active ingredient glutaraldehyde: the dose makes the poison. Glutaraldehyde in concentrated form is a hazardous substance. At a dosage of 3 ml per 100 L of aquarium water, the active ingredient is diluted by a factor of 33,000. This application concentration is sufficient to significantly promote plant growth, but is so low that the aquarium inhabitants cannot be negatively affected. In addition, glutaraldehyde is readily biodegradable in the application concentration used here. What the plants do not absorb is "eaten" by the filter bacteria - all that remains is CO 2 , which in turn benefits the plants, and water. Even with long-term use, there is no accumulation of glutaraldehyde in the aquarium. A safety buffer is built into the dosage. Even accidentally dosing twice will not lead to negative effects. However, you should generally follow the recommended and proven dosage and not overdose on Carbo Care Pro .

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SKU: 1727971553

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4.6 ★★★★★
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Grant Harlow
Grantham, US
★★★★★ 4
Very capable large format color inkjet printer
This thing is big. It’s replacing our Brother color laser, which didn’t get a lot of use (but is great for quick and cheap prints). The HP is longer in one dimension but less tall, so is roughly occupying the same space but with more wall visible (so looks less intrusive). Heavy. I could (and did) lift it on my own but all the packing and instructions say for 2 people to lift it. It’s manageable but I see why there’s that warning. Build quality is mostly plastic but sturdy enough for a static object. Scan lid opens easily, trays extend smoothly etc. Feels well build overall, no concerns. You can download installation instructions using a QR code and it’ll guide you to also install the HP app. The app ideally requires an account, mandatory if you plan to free trial the Instant Ink I think. I had an existing old HP account and used that. The setup was way enough but there’s a weird UI step in the app during pairing where the setup modal is blank grey with a greyed out “Next” button. Looks like it can’t find the printer. Wrong! Just hit Next to proceed. Weird and stupid and I wasted time figuring it out. Loses a star for that. Other than that, setup went fine and test print came out decent. WiFi connected ok and it also has Ethernet. The Brother only has WiFi but is flaky / goes to deep sleep too often. Testing with WiFi has been fine but I feel better knowing I can hardwire into my switch if there are issues! The HP shows on the network as an AirPrint target, and my Mac found it without issue / set up its own drivers. The fold out touch screen is nice, I wish it could be angled horizontally and not just vertically but it’s fine and responds predictably to touch. Colors and text are bright and crisp. Not quite laser crisp but pretty darn close to these old eyes. The colors are also better / truer in my opinion. Had issues with feeding vinyl sticker paper sheets, which repeatedly generated paper jam messages (at no point was the paper jammed) and wasted a lot of time. Willing to blame the paper / media (it’s slightly tacky) but our laser handled it ok. When it finally did print, I noticed some print quality issues / flaws repeatedly in the same places. Unsure of the cause and doesn’t impact subsequent printouts on other paper. Really like the ability to print larger (A3!) size. Note that scanning does not accommodate larger papers (up to Legal / same as the Brother). The supplied ink installed easily but they shipped me more as part of the Instant Ink trial. Subscribed to the lowest tier, which is affordable-ish (they just raised the lowest tier to $1.99 for 10 prints per month) but still costlier than laser. Not a huge fan of vendor lock-in / subs but did see in the fine print that HP allows third party inks to be used, which is reassuring if the subscription doesn’t make sense long term. While printing, the motion of the printer head caused my desk to shake. Worth bearing in mind if you plan on printing heavily while sharing a desk with it. Noise isn’t too bad, better than the laser printing noise we’re used to (lower frequency noise on the HP). I would not print during a zoom call though (noise + shaking). At time of review, $350 for a large format printer with built in scanning (and Ethernet) seems pretty decent. It’s not a bargain but it’s fair. Need to spend more time with other media and have ordered more paper types to test with. Will update if anything changes my rating but so far I feel like it’s a capable replacement for the color laser given our relatively modest print volume and need for higher quality color prints.
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Reviewed in the United States on June 7, 2026
A
Amazon_Customer
Port Orchard, US
★★★★★ 5
Reliable Wide-Format Office Printer – Versatile, Fast, and Feature-Rich
Reliable Wide-Format Office Printer – Versatile, Fast, and Feature-Rich ★★★★★ The HP OfficeJet Pro 9720 is a strong all-in-one wide-format printer designed for small offices or home office environments that need 11x17 printing capability. It handles printing, scanning, copying, and faxing in one unit, making it a very versatile productivity tool. Print quality is sharp and consistent, especially for documents, presentations, and color graphics. The wide-format support is a major advantage for users who need larger prints like spreadsheets, posters, or marketing materials. The automatic document feeder (ADF) and duplex printing features significantly improve efficiency, allowing for hands-free scanning and double-sided printing without constant manual input. Wireless connectivity is stable and easy to set up, with good support for mobile printing from phones and laptops. It integrates smoothly into typical office networks. Print speed is solid for an inkjet in this category, making it suitable for moderate to heavy office workloads. The included Instant Ink trial is a helpful bonus for managing ongoing supply costs. Overall, this is a dependable and well-rounded wide-format all-in-one printer that delivers strong performance, convenience features, and good print quality for office environments that require flexibility and larger document output.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
C
Chy In Pa
Grantham, US
★★★★★ 5
Definitely Not Your Average Home Printer
What a beast of a printer. First thing to know is this is definitely not your standard little home office printer size. This thing is more small business office sized, so make sure you actually have room for it before it arrives. That said, the quality is exactly what I expect from HP. Setup was super easy and pretty painless overall. One quick tip though: remember to remove the cardboard insert from the paper tray before testing it because apparently I needed that reminder myself. Print quality is excellent, especially for color documents and larger format stuff. Everything comes out sharp, vibrant, and professional looking. The phone app is honestly one of my favorite parts. It makes it really easy to monitor ink levels, print from your phone, and troubleshoot without having to stand in front of the printer pushing buttons and getting annoyed. The touchscreen is responsive, wireless setup was smooth, and overall it just feels like a solid well thought out machine. Definitely overkill for someone who only prints a return label twice a year, but if you print a lot or need larger format printing, this thing is fantastic.
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Reviewed in the United States on June 2, 2026
J
Jen
Cuba, US
★★★★★ 5
Decent printer
The print quality and speed are great. I currently have several different printers for various needs (laser for work, sublimation for crafting, and this one is potentially replacing my ink jet, for stickers) and this one is faster and a nicer quality print than my similarly priced of a different brand. Sometimes (and for literally no reason that I've been able to identify) this printer decides it doesn't want to print. Exactly like every other printer I've ever owned, connectivity can feel chaotic. Overall, all things considered, I think this a decent value for the money. It was easy to set up and get printing. Minimal packaging. Intuitive design. Up and printing within 5 minutes. I love the ability to print is larger formats. I did not sign up for the free 3 months of ink club, so cannot comment on that. So far, the ink consumption feels typical for an inkjet printer. Overall, this is a yes from me.
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Reviewed in the United States on June 6, 2026
L
Liis
Natrona Heights, US
★★★★★ 3
requirement: scan codes & down load proprietary app to set up & use all the functions of the unit
SPECS The printer weighs 39.19 pounds.  Overall it is 22.625 x 17.5 x 12.03125 inches.  The output tray extender sticks out 5.875 inches from the unit.  The usable power cord length is 59.5 inches. The unit can use legal [B00006GNXZ], letter [B0B57CKBCT], or ledger [B0017LR3M4] size paper. The control panel tilts up and is a color touch screen. The display is 2.125 x 1.625 inches.  The unit has two sided coping, scanning, and printing. There is a document feeder on the top.  The home screen has menu, copy, scan, trays, supplies, jobs, and help as the main functions.  Firmware updates can be set to automatic, notify, or disabled.  The printer does not come with a user manual.  OVERVIEW The unit comes wrapped in a plastic bag that has handles on each side. I was able to easily lift the printer up myself using the handles and took it to the desk.  The printer is missing some key features that do not make the printer cost effective. There is only one print tray. A fold out rear tray vertical tray is not even there.  Having to constantly change paper size is an extreme inconvenience. There is no USB port to be able to print from or scan documents to a USB hard drive or directly from a camera, which is a disadvantage.    In addition, to utilize all the features a code needs to be scanned and or the H P app needs to be used.  I did not like having to scan a code to set up and connect to wireless connection as well as using any of the scan features of email, network folder, computer, and share point, which makes the scan option useless. I had to download the HP app to set up the printer. When I was done I deleted the app. I do not want numerous apps on my devices.  I found not having a manual for the unit to be a disadvantage.  This is not a user friendly printer with all the code and app requirements.  Using the web address on my laptop and phone, just gave me a link to the play store to download the app again, which I did not want.  The size of the display screen is small. At times I had to touch the menu button more than one time to get it to continue to the next screen.   The unit functioned well printing and scanning. I was able to print from the computer via wireless connection without using the app. The copy function does not require the app or show a code to scan to be able to continue. The document feeder allows for quick copying and scanning, which is an advantage. The rollers did grab a one sheet copy job crooked and the copy was askew on the page which is a disadvantage.  On best, the copy did not come out any better than normal.  The copy images were a poor representation of the original. The copy images were more pix elated making them not as complete and crisp. In addition, the single color grey images were very pale and could barely be seen. I did not sign up for HP instant ink, compatibility. I also disabled firmware updates.
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Reviewed in the United States on May 25, 2026

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