also, just a tip

ditch the drip-trays you have under your pots. When you water them just pull them from your grow space and water them over a sink or over something else to catch the run-off water, then once they have finish dripping put them back in the grow space.

The reason I said this, is because the drip trays will keep the bottom layer of soil very very wet and mud-like, which will cause root rot in your plants, which could potentially kill them.

You might also want to add some dirt to the top so stale air doesn;t sit in the top of your pots. You can add dirt up to the point of the stem where the cotyledons are