The problem with the hot air coming out of the pumps won't be resolved with colder air intake. The way UC reduced the air outlet early on increases the pressure output from the pump. This higher compressed air heats up.
Want colder air coming out of the stones? Run a larger line from the pump to a larger distribution system that does not increase the pressure, but takes advantage of the cfm without restrictions.
I'm calling bullshit on that... When ever its cold around my airpumps my water temps go down I don't know about how it will effect the water temp in uc because of the inline pump making more heat but in a 5 gal bucket it makes a difference in water temps hence people putting their airpump inside of small refrigerators and whatnot. Putting an airpump outside when running co2 is a must. Putting the airpumps into a colder room outside your grow helps a lot. Why would you want an airpump in a grow room from the get go is beyond me. The idea is to remove heat from the room not add it. And airpumps get stupid hot. The hose works good too I have done that also. But simply just moving the pump makes a night and day difference. In all reality though what you need in UC is a chiller... thats the real way to keep the bad things away and keep that temp down.
Wow he laid that shit down... I just saw what I am about to do when my UC comes... good post
HAHAHA I got quoted! You are both right on different points. Lets combine both your ideas.
Air cooling is incredibly efficient. While larger air lines will work, longer lines can be just as efficient too. Its all about surface area when it comes to cooling air with air. (Concrete absorbs heat very well too)
As you saw with my setup. We are NOT running any water chiller. Water drops to 65 F at night and warms up to 68-69 F by the finish of the lights on cycle. This is relative to the basement air outside the rooms being 65 F at all times. You will notice when the plants are smaller the lights penetrate the buckets more and may go up to 72ish, but you can control this with the A/C. The buckets will match the room temp, its all relative. The grow rooms themselves maintain 75 F during lights on cycle but the water temps stay much lower.
FYI that 1/2" pvc slip, isn't even glued together, just fitted. There was a noticeable improvement in the air bubbles in both systems too. I have no idea why since it should equalize just the same. Perhaps they are that much cooler and more efficient? Or one is more powerful than the other? Or a combination of the two.
They sell the pvc tubes in 10' sections. We have 1 - 9ft section from the air pumps to a T that goes to both rubber manifolds. The manifolds used to be hot to the touch and naturally was pumping hot air into the water raising the temps. We just decided to wait till we added CO2.
FYI on putting pump in a refrigerator; would not work at all. The pumps get too hot. You would burn up the fridge fast. Fridges are not designed for process cooling, they are a solid state cooling appliance. Meant to strictly maintain a cool state, not to constantly cool a warm source.
