Plant feeding questions??????

Hello everyone,

My system is 24 Gallons and has 2 White Widows, 2 Super Silver Haze ( Small size but new growth) maybe 3 1/2 inch's tall ( stunted Growth ) and now has 2 NYC Diesel clones in it, The SSH And the WW are 25 days old today, the Widows are growing great, about 7 inch's tall, I'm due to change Reservoir tomorrow ( 2 weeks ), should i give the Plants a small amount of Nutes or just straight water, try to get the SSH larger?

I check the Ph everyday and i also check the Tds readings, it doesn't appear that they are eating, drinking a little bit, but not alot.

Thanks for the help.

when ever feeding try or start with a 1/4 strength nutes. you can always add a little more next time. Then when they look like the picture they are good

1/4 strength is pretty much a rule of thumb when starting to feed nutes. as soon as you're seedlings have 4 true leaves it's pretty much a sign that they're in a vegetative state and you can start feeding. some people start earlier some later. it all depends on what strains you grow and from experience. personally i don't feed till they're in veg. for clones i usually start feeding at half strength since they usually can take it without nute burn.