Natural Rapport Aquarium Gravel Cleaner, The Only Gravel Cleaner Fish Need Cleans Fish Tank Gravel to Improve Water Quality and Clarity (473 ml)

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Had excellent results within 48 hours. I have a heavily planted 240ltr community tank containing; fish, shrimp and snails with a special baked peat based substrate. Great for shrimps but not so good for fish waste. The stuff just collects waste within the first 1cm of the substrate. As it’s a planted tank I can’t disturb the substrate without pulling up plants. So I bought this to help. Within 24 hours, the water had gone cloudy, the following 24 hours (so 48 in total) the water was crystal clear. I never considered my water to be anything other than clear already but this proved me wrong. Excellent product just for that, let alone the added benefits of it breaking down waste, this obviously takes much longer than just a couple days but I’m already happy with the initial results. It’s had no impact on my water chemistry either, no additional ammonia or nitrite*, both still at 0. PH is still stable. So all in all very good. *note I don’t test for nitrates as I dose this as part of my fertiliser regime for the plants. I doubt this would impact it anyway.

This is the second "gravel" cleaner I have used (Dr Tim's Waste Away is the other). To cut to the chase, these types of bacterial cleaners do work, but they are more subtle than you may think. They will not get rid of large fish food flakes that are rotting on your gravel (you need to vacuum those out yourself). But they are effective at digesting and breaking down the detrius that gets into your gravel over time. They also do act as nitrifying bacteria, specifically for nitrates which can help control that issue and extend water change times. Personally, I appreciate bacteria products for aquariums as it establishes a more natural environment for the fish. But, (and there is always a but!), you must be careful in using these type of cleaner bacteria. Never use more than recommended (error on the lessor side!) They can and will use up the oxygen in the tank and essentially "drown" your fish if used in high concentrations. At normal/recommended usage levels they are safe for all your aquarium pets. If you find your fish gasping for breath immediately stop using the product and do what you can to get more air in the water (bubblers and water changes will work). Because these bacteria will use oxygen, they respire CO2 and this will help your plants as well. Also, I would not use this type of product if you have a heavily planted tank and are using a CO2 system...this will be almost certain death for your fish due to lack of oxygen... So again be aware of product usage and its effects on oxygen levels. The product recommends using it once every week or two...I would recommend once every 2 weeks to be safest. Also, I would recommend a good gravel cleaning (at least the top of the gravel) to get rid of the large pieces of detrius first, then applying the product. The bottle will serve 1880 gallons of water...in a 75G tank, using once every two weeks, the bottle will last about a year. Another tip...don't use more than one bacterial product on any one day. Spread apart their usage i.e., use nitrifying bacteria on one day and then a day or two later use this product or other bacteria products...you want to give each bacteria product time to start growing and reproducing. Finally, this product has one issue that should be corrected immediately. Bacteria products do not last forever in a bottle. you should always know how fresh the product is and how long before it expires. The product should be clearly labelled with its date produced and its expiration date. Most products like these are generally good for a year, maybe two, if they are stored properly. Only buy freshly produced product for best results! If its been sitting on a store shelf or warehouse in an uncontrolled environment for a year or so look for something fresher...dead bacteria from poor storage and age is the biggest problem with these kinds of products.

I was pretty unmoved by what I read in the reviews for this before I bought it, despite everyone singing its praises. I figured it wasn't going to be anything special, but I was willing to give it a shot. I am one hundred percent converted. I always used to look at other people's aquariums and be jealous of their crystal clear water; mine always seemed to be cycling or dirty, one or the other. I have no idea what this stuff actually does, but it makes your water magically clear and clean in ways it wasn't before, and it can even lead to a decrease in the number of water changes you need to do. It's now part of my weekly essentials along with dechlorinator, I've been buying it ever since and will continue to do so. I almost had a heart attack at one point when it looked like it had been discontinued, but it has just changed its branding and packaging. If you bough the old Natural Rapport, this is the same stuff, they haven't changed the formula. Praise the sun!

This stuff works awesome. I used a different kind before and it worked ok but it left the water cloudy for at least a full day. I put this stuff in at night checked it in the morning and the water was crystal clear! There was still some debris in the gravel but I checked it late in the day and it was almost completely gone. I'm guessing by the next morning it will be totally gone. Very impressed with this and will definitely buy it again!