leaves are drooping help

can anybody help me i am doing 20 plants there 4 weeks in to veg and on about 7 ov them all the leaves are drooping real bad theres no problem wiv the colouring on them there just saggin and drooping does anybody no why this might be happenin ?

Lift the pots and see if they are light. Stick your finger in the soil and see if it is dry. They're probably either thirsty and need some water, or you've been watering them to much and are drowing them.

When did you last water? How big are they? How often do you water them? Feeding them at all? Most likely a watering situation.

im using a flood and drain system feeding them 4 times a day (every 6 hours) for 30 minutes at a time

Well I'm a soil grower so I dunno about hydro. But you say your FEEDING them 4 times a day? Not just water? Actually FEEDING them nutrients 4 times a day? If that's the case they are most likely WAY WAY over fed! That's what I think anyways, like I said, I grow soil, but reguardless of weather it's soil or hydro feeding 4 times a day seems like way WAY to much nutes to me!..

You might want to try and flush em. Do they get somewhat dry inbetween feedings at all? Or are they pretty much constantly moist?