Why should I not do this? -Fert question
I'm sure there is a very good reason that escapes me, but I've not found a reasonable answer to why I cannot use a very small amount of something like Peterson's 20-20-20 fertilizer in the aquarium. The references I found so far say not to use them because one doesn't use macronutrients in aquariums, which is at odds with other things I've read.
Just why is it a bad thing to do?
Eheim Pimp #336- "Classic" 2215