What do you mean by 1 on 4 off timer. Can you link me please. Thanks. Im guessing the pump isnt suppose to be on 24/7. Ive heard some people have it on for 24/7.If you can find one a 1on 4off timer is best, plain water thats got the right ph, nutes can be added at a low dose.
Domes do help if your rh in your room is low, I like a x2 bult T5 light.