Mephisto Genetics When to feed? (Roots Organic Soil and General Hydroponics Nutes)

[Zoomzoom07]

I've got a couple seedlings about 5 days old (Creme de la Chem and Samsquanch) in 4 gallon pots under a 400w hps. The soil I'm using is Roots Organic Original with about 20% extra perlite, 10-15% earthworm castings and crushed dolomite lime mixed in (1 tablespoon per gallon of soil).

I've never used this soil or EWC before so I'm not sure when to start feeding. My nutes are General Hydroponics Flora series. Any advice would be great, especially if you've grown these strains before.

Thanks guys

 

[MaxPowerGrows]

You should ask @gbd , he knows a lot about soil, and specifically mephisto strains

 

[gbd]

Whenever they start to look hungry, probably around week 3-4 You'll notice leaves starting to fade if they aren't getting enough nutrients.