What exactly is wrong with Miracle Gro?
Before I begin, I've been reading on this for ages.
I've been using some Wal-Mart Jungle brand test kits, treated water and some Miracle Gro specialty formula 20-20-20. The indoor recommendation (1/2tea spoon) in ten gallons reads under 20 ppm by this kit. Ph at this concentration sunk from nearly 8.5 to around 7 in two trials. TDS reading seemed affected by something in the ferts, read lower than normal tap. I'd keep working, but I'm out of test strips currently cannot acquire more.
Contents read: (N) 5.9% ammoniacal nitrogen, 6.0% nitrate and 8.1% urea; (P2O5) 20%; (K2O) 20%; (B) 0.02%; (Cu) water soluble copper 0.05%; (Fe) chelated iron 0.10%; (Mn) water soluble manganese 0.05%; (Mo) 0.0005%; (Zn) water soluble zinc 0.05%
Derived from urea, ammonium phosphate, potassium nitrate, boric acid, copper sulfate, iron EDTA, manganese sulfate, sodium molybdate and zinc sulfate.
Nutrient balance aside, is there really anything that bad about the stuff? I have dropped small amounts of the stuff in a couple tanks before and no evident ill effects in fish/shrimp(ghost/rcs.) In small doses would nitrate from fish and maybe API's Leaf Zone (0-0-3+iron), along with regular maybe 35% pre-dose water changes in a planted tank that is using all available nutrients (testing 0's across the board) all balance out?