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that's a good point dsnutts, will probably go with a stealthy window venting system, less potential problems to so long as I do a good disguise job...

I've seen a lot of accounts of chimneys making a good output exhaust but was wondering if anyone has used it for cool/fresh air INTAKE? My flue isn't used at all (fires / gas boiler) and I can feel the air in my fireplace is noticably cooler, so it makes sense to me. Obviously I'll want...

Day 6 I switched to my 600w HPS because I didn't think the 125W CFL was doing the job and got some SERIOUS temperature problems. Is temporarily fixed at 85F with a wide open window and a little input fan but I've ordered a 400cfm extractor and will be using my current extractor to bring in cold...

Got an input fan running pointing right at the bambinos and temps are steady around 80. It aint quiet but it was cheap and it's working! Gonna try running duct in from the chimney for extra freshness, hopefully the distance won't fuck with the cfm too much. Niceone Mastiff n Dizzle.

Worth a try before I try any more drastic!

Unfortunately the filter will only work up to a certain airflow, it won't do the job at 400cfm :( Thanks Frog, that looks cool (snarf snarf), is it loud?

Cheers, will need a new filter for a bigger fan though, the whole lot came as a kit (thought it would work together as a result!). So cost won't be much different, am more concerned about noise.

Wow so my airflow needs to be 3 or 4 times bigger? Shit this could get expensive (and noisy!). Maybe downgrading to a 400W would be more suitable for me.

Hey thanks, seems your setup is VERY similar to mine, except for my lack of venting. Do you have airflow coming from outside? If not what's the room temp outside the tent?

Obviously this temp is way too much, am trying to work out the best way to fix it. I've got a 4" inline extractor fan (187 m3/h) running via a filter with passive intakes in a 4x4' DS tent. There is no outside intake but the room the tent is in is well ventilated and about 60F. Have seen...

cheers will give that a go, are there any possible side effects? got some others need to catch up, will probably switch to the 600 soon. ps that's one happy bunny in yr avatar welsh haha

Got a 4 day old seedling at 2.5", worried about stretch so I put my 125W CFL a few inches from the leaf tops, now temps are around 90F, but no signs of burning. Should I relax about the stretch and sort my temps out, keep em hot and short or get my 600W HPS out and try with that? Ta!

Yeah they're only good for soil mate, think I will move onto hydro later but get soil nailed first. What's your setup? Heres the update for: Day 4 All pots got a little sprinkle of water yesterday, all sprouted now and proper leaves have appeared! Two on the right still only showing...

Ta! And Janna yeah they're called Air-Pots, the holes are supposed to let the soil aerate and the uneven surfaces promote root growth. Also you can take the sides off for easy transplants. They are a bit leaky though!

Lighting: 600w HPS, 150w CFL to start off. Venting: 4" Fantronix TT100. Nutrients: Bio Bizz Grow, Bloom & Top Max. Area: 4'x4' Secret Jardin Tent Conainer & Medium: Bio Bizz Light soil, 1L & 15L Air Pots. Method: Might do a bit of LST? Seeds & Strain: 6 X Serious Seeds AK-47 Easy all, cutting...