looking for feedback on my first dwc setup

[indiana.cones]

hi guys,

 

my first dwc setup, seems to be going well, wondering if anyone has any feedback or suggestions about how im going about things. sorry no digicam pics as yet, im sure youve seen a tub and a plant before anyway

 

i have 2 x 80L black tubs with removable lids and 3 x 250mm holes jigsawed in each lid. then have 2 x 30cm air stones in each each air stone receiving ~4750cc/min (9500cc/min/tub) each tub has a 1" hole at the base connected a gate valve. the gate valve with a piece of clear pipe serves to monitor the water level inside the tub without opening the lid and disturbing the plants, or to simply drain the contents of the tub.

 

my grow space is a reasonable cupboard space about 2.2M x .8M with a 400w hps. 240V scares me and didnt give me the flexibility i needed so ive got a 12V, 2A regulated power supply in the shelf above and exhaust is done by an array of dampened 12V 12x12cm brushless server fans, some inline the exhaust for extra-boost. exhaust into the roof space at the top, intake from the wall cavity at the bottom. cupboard is sealed off to the room. total exhaust capacity is in the order of 400CFM (~10m3/min). i have a ozone machine i can plug in to the exhaust line if required but it is generally unused. im in a warm climate and its summer so the lights are on 12/12 during the night and off during the day to try and smooth out the ambient temp a bit more. 3 more secondary fans simulate wind and circulate air within the grow space to try and turn out stronger stems that can support heavier buds.

 

im using canna nutes. first week i was 1/4 and then 1/2 next and now full nutes.. ph is about 5.5-6, im draining the tub completely once a week, and topping up with water from the rainwater tank daily. im also using oxy plus hydrogen peroxide (1/4 strength) every few days to try and jack up the oxygenation inside the tub. i was using nitrozyme when the plants were in veg and earthjuice catalyst now they are in flower, also at 1/4-1/2 strength.

 

series 2 will have a control tub with a float valve.

 

any other recommendations anyone can make?

[Chato]

sounds god mate only recommendation i can give would be run with one plant per tub if you can unless you really want a mix of strains and then that opens up a new series of probs....

 

good luck and lookin forward to pics

 

peace

c

[Nath]

They are 80L tubs.. you got no problems running multiple plants in tubs if they arent there for very long. But yea, if your going to veg them for ages then seperate the tubs with a plastic divider or something between the plants and get more air into them, the more air the better. Ive had experience with growing with two plants in 40L tubs and my harvest turned out ok. I had three 40L tubs with 6 plants under a 400w light then a 600w @ 2weeks into flower.

 

After that I started growing with a bloke who thought he knew what he was doing growing in rockwool and clay but it just brought on dead underleaves, algae'd rockwool blocks and dense damp air because he didnt know what he was doing with humidity and mould all over the ceilings. Then 10 weeks ago I decided to move back into my parents place and stop smoking everything I was.. and now here I am, plotting my own DWC grow again in a few weeks in an apartment