New sprouts, time to feed?

Hey guys .. I have gotten through my germination problems and now have 7 sprouts that are doing well. 2 NL x SK#1 were planted on 2/20/08 and the WW,ICE,Romulan were planted on 2/24/08. I have been using distilled water with a pH of 5.5 and one drop of Superthrive per gallon of water. I check and adjust the pH every day. My question is should i raise the pH to 5.8 and start feeding FoxFarm nutes at 1/4 strength at day 7 from sprout or just use some Liquid Carma only @ 1/4 strength? I have read that feeding early increases the chance of more females and it produces a stronger plant. The Green House Seed Co. says to feed once the first true set of leaves have opened. I have also read that you should wait until they get their true second set of leaves before starting nutes and only use pH adjusted water and some Superthrive or Liquid Carma optionally. Which would be best for my plants? WWW.GREENHOUSESEEDS.NL - Green House Seed Co. Amsterdam Since 1985

Well since no one had any input i decided to go a head and start them on 1/4 strength FoxFarm nutes with Liquid Carma and SubCulture with a pH of 5.8 and ppm of 107. They are responding very well and one of the WW and ICE are out shining the rest and are probably going to be mothers, if they turn out to be girls. I plan on bumping up the nutes to 1/2 strength this Friday. I guess i answered my own question.