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I've never read this in anything but a friend mentioned it so now I want to get someone else's opinion. I have rockwool in an ebb & flow table for my clones, but about half of the rockwool cubes are above rock, can this cause any problems/mildews/fungus etc? I would prefer to save the 30 bucks...

I am trying to set up an ebb and flow system on this timer and cant seem to figure out how to make it so only one of the two outlets on it runs its cycle, for example if i set cycle 1 to 12/12 for my light, how could i set cycle 2-4 to run my pump for 2-3 mins at various times throughout the...