
I purchased these tablets as I renewed the plantings in an existing aquarium. I was told (by the owner of a large and reputable aquatic store) that the plants needed fertilizer at the roots, because they are root feeders. Knowing what nitrogen and phosphorus are capable of, I inserted sparingly, deep in the gravel. Within a couple of weeks, the nitrate level in an established aquarium is through the roof, and my water looks like green jello. I now have the aquarium covered to limit algal growth, and have purchased a UV filter to try to kill the rest. I am currently doing three 30% water changes each week to reduce N + P, and after two more weeks, it's still pretty green.
The cost of the tablets is far more than the few dollars for the product. Right now I have over $100 invested in getting rid of the algal bloom, and haven't seen my fish in weeks, other than their outlines when I feed them (sparsely).
Up until I used these tablets, I used a liquid micronutrient additive, which never caused a problem. I would recommend trying a micronutrient tablet, if have plants requiring root zone feeding. I have used Seachem tablets, and they contain only trace N and P, and a number of other micronutrients required for healthy plant growth.I have use these on my 20L for 8 months they are a great product. My planted tank is an official grow beasts.this item is okay but needs some improvement. I would suggest that you use another tab instead. I used this in a 55 gallon that's lightly planted. A good way to use this is to give each plant 3 tabs. Other than that it's not that bad but needs improvements.
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