Has anyone ever soaked there seeds in a Gibberelic acid solution before germinating? I have read that it makes it more likely you'll get a female sprout. Just wanted to get some feed back before i try this on my expensive seeds.
Keeping everything as clean as you possible can will help your avoid a laundry list of headaches and problems. Believe me it might seem a little like over kill but it's not.
Yes, a sudden change in water temps will shock your plant. You clean everything in the res. I leave my water/ nute solution over night with an air stone to keep it oxygenated and come to the room temp before I add to my res.
I did the same with my DWC. i would change out my nutes and sterilize my buckets every week. i just shoved them in the dishwasher on a short wash. worked great.