New setup, advice and opinions

Hey guys ok about to start my second grow, this time I steppes up my game a little. My buddy let me send some ice seeds from nirvana to his house so I have good strains? (anybody had this strain before? Opinions?) also instead of mg soil haha I know it's awful I got two waterfarms from genhydro.com ( any opinions on those?) and I'll be using a 400 watt hps. It will only be two plants in a closet, is this an ok setup for a rookie? I think I did pretty good. The hydroponic store I got t from he said the waterfarm is pretty good and only 64.99 each and it comes with all the nutrients. I'm sure there are better nutrients out there but the guy said they should work pretty good, he also gave me a feed chart for using the waterfarm. Any advice or secrets or anything would be awesome. Thanks and sorry for the grammar I'm on my iPhone

how big is the closet?? a 400w hps will put out alot of heat

It's vented last time the temp stayed around 78 the house temp is usually 73

Dude i am using the same set up. I just started too, about two weeks in now... I had some ph issues to take care of... i am watering 30mins on and a hour off. lights 24/7. is it bad to keep watering at night in this stage?

I have no idea bro I just bought the waterfarm I am putting my seeds in the waterfarm in like a week or so but I plan on leaving it on 24/7 but I'm gonna let the first three sets of leaves pop out first