Does Aquarium Fertilizer Harm Fish. No harm comes to fish in properly fertalised tanks but serious planters and fertalisers do weekly water changes of 50I do more than that most of the time and dont fert. Seachem Flourish Excel then yeah it wont harm your fish at all.
A good organic or biological liquid fertilizer will not harm the fish in your tank. Most fertilizers comprise of common elements available in natural waters. I have also have root tabs.
Alaska fish bone fertilizer is a natural by-product of the fishing industry.
Thousands of single celled algae particles are floating through the fish tank. If you have a freshwater aquarium at home you have supply of houseplant fertilizer ready and just waiting to be used. If you did a good water change and substrate vac after the rescape Im sure it wouldnt be that bad. However alkaline water fishes may not take the dip into the pH 58 range well.
