GMSgrowsanswered grow question 4 years ago Make sure the white isnt PM, sometimes when humidity is a little high in the tent and the water under the plants can start it early on. If it happens to be PM 40% homoginized milk and 60% water and give her a spray. You also should try to keep your humidity down around 40% as when growing in water your humidity around your plant is actually quite a bit higher than what the tent says it is. Cheers friend