How to care for yellow/browning leaves

Alright, got 20 clones under a shop light (CFL), but previously had them under a 400 watt HPS, which made some of the leaves turn yellow and stuff.

Should I be trimming/pruning these dead/dying leaves?

Was it just the heat of the HPS killing the lil girls?

how old are thay?

its ok to use 400hps i used a 600 from thestart just make sure the light is not to close to the plants.

under a HPS you need a fan and good ventalation. get the fan and use the shop light to start seedlings and clones

They're still very young, 1-2 weeks old max. The biggest one is still only 4" high.

sound advice

So, its a no go on trimming the yellow parts of the leaves?