rockwool germination

Hey everyone, been really enjoying reading all the great advice on here so far ! I am 3 days into seed germination now and not seeing anything sprouting so wanted to post and see what you all think? PH balanced water with lemon juice - reduced ph as it was high (around 8). Poured on to rockwool...

So I have recently decided to get rid of the tent. This being said I've decided to add a 600 watt hps ontop of my existing 2 1000 watt hps. Do you think I could cool all 3 hoods if I use 2 inlines, one on either side. I'm running 4 strains from greenpoint seeds. 6 of each. 6x punch bubble. 6x...