I don't understand why your saying this.... I don't have yellow water I have a finnex planted plus 24/7 led fixture that changes the light throughout the day.... And for my soil substrate.... If you don't use ferts you will burn out the nutrients in your substrateYellow water, according to Diane Walstad, is due to humic substances from decomposed plant substances. Pg. 16: " humic substances are natural water purifiers that provide an important mechanism by which plants protect fish from metal toxicity."
I couldn't tell you had it for like 7 years just bought it from a LFS with plants attachedLooks really good. What type of driftwood is that?