strange problems every grow but now new problem, please help

hi all, first post just looking for some help.
firstly i will start with a quick intro, this is my second grow, my first grow was with bag seed from bush weed i grew in a 1m cube with two 80w cool white cfl, they took forever, so i moved on to a cube lock made room 1.8w1.5d1.8high using a 600mh retro fit in a cool tube then i put in two super skunk clones and they took off the bush weed took forever to grow but i ran into a problem everything was in coco brick type and i had a nute lockout because of ph 6.5-7.5 i flushed forever and eventually got the run off down and plants picked up any way after that it was fine i mean a few times run ofd ph creeped up and flushing took forever im talking 100l per 30l pot min any way i ended up with all bush weed were hermies so i threw them out as soon as i spotted balls, the 2 superskunk veged for 5 weeks and flowered for 5 weeks under 2 600w hps in cool tubes netted 1.25 pound each. pretty good eh?

so this time round i pirchased a 2m cube jungle room, 2*600w mh rf in cool tubes and 1*400whps in cool tube, growing 1jack herrer in a 20l pot 2 white something in 20l pots 1 high yeilding indica in a 30l pot 1 in a 20l pot and one of each in 5l pots all from clone medium is coco i used house and garden coco and house and garden a and b at 1.2ml a litre and clonestart nitrogen booster at 1ml/l and rizotonic at 40ml/l, the jacks were in flower when cloned are going stromg veg growth is frosty with trich but the issue here is twisted growth and fan leaves are all 1-3 fingers wtf they were 5-7 they look like they have down syndrome i really do mean this, not being derogitory to anyone but thats what they look like.... one of the white somethings in a 5l pot is turning uellow because of a high ph run off which is my other problem that keeps happening to me, why???? feed is 5.4-5.8 i calobrate my ph meter weekly and i adjust it daily any help would be great. all clones are 2 weeks into veg the jacks are all short and bushy the whites are not growing very fast yet and are short and slim typical sativa trait and the hy indica is going really fast not so much bushy though more so apear stretching but are right under lights not sure if they are 100% indica but does poses traights such as fat leaves and huge calyxs. sorry no pics on my mobile i am very hesitant to log on from home due to the laws in australia amd privacy bs
 
also i should add there was a temp issue so all stems are purple atm, the room is 30-31 degrees with the ac off with rh at 30% and 25-27degrees celsius and rh 50% with ac on and 20dc and rh 50-60 lights off, looks like i have to run ac when lights are on despite having cool tubes with a dedicated 6" aux fan running 24/7 and a cf 6" centrifugal fan that sucks air through, this sucks the walls in so i know its working great i pull fresh air through a window and dump warm air in my house its currently winter here in oz and i am having issues with a wooshing noise from air flow going through the tubes from out side so if you know how to stop this it would also help :)
 

*BUDS

Well-Known Member
Shit that's hot 31 with cooltubes, how hot is it outside? The cooltube glass can only get so hot before shattering. You need the centrif pushing or pulling air thru the cooltubes about 400cfm and insulated ducting, standard ducting gets that hot after the last cooltube that it heats the room up too much. Also you must exhaust the hot old air outside the room that the grow room is in.
 

*BUDS

Well-Known Member
its currently winter here in oz and i am having issues with a wooshing noise from air flow going through the tubes from out side so if you know how to stop this it would also help
If you cant get it right in winter forget it, why is it so hot in there? Im running 2 x1000w in the flower room and its 21-22deg most nights atm, going to about 25-27 at its hottest in summer. Make sure you run the lights at night. As for the noise the acoustic ducting will be quieter and try a muffler or dumping the air under the house or in attic.
 
all air is dumped outside the room in the hallway heating the rest of my house, the noise is on the intake side of things. the other issues are the 1-3finger leaves and retarded growth, temp is fine at 31but i will try the insulated acquistic ducting between tubes see how that goes and i will try 8inch intake duct too
 
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