brown roots : i'm sure Zandor knows

[Perp]

I clean with H2O2 and use a little bit of H202 in the rez water. But mainly its cold temps. If you keep the temps under 70 degrees F, you could get away with not changing the water for weeks with no algae. I found FloraNova just tends to really promote the algae, although I also found it works pretty well too. Ive got some massive plants from it.

For this reason I've always wondered why people think that watering in soil with cold water will "shock the plants." Roots need to stay cool.