I notice when people start seeds inside, " under the lights" the soil in the cell packs aren't 3 or 4 inches deep, like it needs to be in the milk jug or liter soda bottles, which leads me to ask the question could one use those black cell packs inside the WS containers? It would help you to prevent HOS because you are only have so much space for the seeds? Hope this makes sense. Would you need drainage holes in those cell packs if you have drainage holes in the bottom of milk jugs/liters? It looks like you would need a drainage hole in bottom of cell pack too.
