Do you use a chiller?

[zulu_principle]

I run them both in my prop facility and on my home tank.

System Ex.

400 Gallons
4 x 400 MH
8 x 110 watt VHO
2 x 250 MH

Water is 12 inches deep.

1/3 HP UMI with a dual controller (cooling on, heat will never come on)

Its not on with the entire light cycle, but near the middle and then on and off for the balance of the cycle.

Not sure what the market is like there, but Ebay always has various ones and you could save yourself a few bills.


Wendell