need sum advice on water temps in my dwc

in my grow room the air temp is 75 and the water temp is around 71. i kno ur not suppose to let is go over 69. any way to lower the temp of the water and is this going to fuck my plants up? they just sprouted, il get pics as soon as i get my camera. thanx

I've done 1 dwc grow and from what i learned hydrogen peroxide is a must in my eyes. My closest on the hottest days was hitting 90 thats another thing i learned with my setup summer or hotter months is bad for dwc with no way to continually chill the water. 75 is really not that bad, use hydrogen peroxide and freeze gatorade bottles and just cycle them in and out when it gets to warm. As long as the temp in the room stays about the same those two things should solve your heat problems.

lilsmoke said:

in my grow room the air temp is 75 and the water temp is around 71. i kno ur not suppose to let is go over 69. any way to lower the temp of the water and is this going to fuck my plants up? they just sprouted, il get pics as soon as i get my camera. thanx

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Low to mid 70s should be an acceptable range.

h2o2 use is a must. Dose res with 35%h2o2 every 3-4 days at a rate of 1.7ml per liter of solution.


i highly recommend redundant airpumps in DWC so when one fails you don't lose your crop while at work or something

what do i need hydrogen peroxide for? o and thanks for tha quick responces..

H2O2 helps oxygenate the water and kill any algae or bacteria that may be growing in your water or on your roots. It works great as long as you don't over do it.

lilsmoke said:

in my grow room the air temp is 75 and the water temp is around 71. i kno ur not suppose to let is go over 69. any way to lower the temp of the water and is this going to fuck my plants up? they just sprouted, il get pics as soon as i get my camera. thanx

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The cooler the water the better the roots can take up nutrients
to a point. 65-75F (it's fuzzy) you might see 64-76F
theres a point where it get to cold and the up take slows down just like when it get to high the up take starts to slow down and then when you get to around 90F you start to kill your plant. More crap likes to grow in your nutrients solution when the temp. gets to warm.

i was actually thinking of throwing some peroxide in the mix too...

is there any special kind of h202 i need for my tank? were can i buy it and how much do i use? i have 30 gallons of water in my tank..

how much peroxide in tsp. per gallon.. say using a 3percent peroxide solution