Perhaps the excessive air is oxidizing the iorn, and no...it's best to use the nutes when mixed.

If your water has been sitting-around a couple of days, a couple of minutes of the bubbler might do some good. But when you water, the suction it creates within the soil draws-down the air anyway.

Isn't algae green, and cyanobacteria red...?
Rusty Trichome Reviewed by Rusty Trichome on . 2 Dumb Questions I should know I have a 5 gallon bucket with an air pump running 24 hs with fow farm grow big and big bloom. There seems to a red preciptate that collects at the bottoom ( see pic). Also is there a point in bubbling water to purify water. I can't afford R/O or distilled in the quantity needed Rating: 5