• Welcome to Overclockers Forums! Join us to reply in threads, receive reduced ads, and to customize your site experience!

Cooling Tower Questions

Overclockers is supported by our readers. When you click a link to make a purchase, we may earn a commission. Learn More.


May 21, 2001
I'm thinking about ditching my smallish radiator for a bong/cooling tower, but I have a few concerns. First, what kind of biocide can you use in the water that wouldn't stink to high heaven? Water wetter and antifreeze are definitely out. I suppose chlorine is a possibility, but I don't fancy the idea of having my computer area smelling like a public pool. Suggestions?

Second, assuming that I go with an 18-24" high by 4" diameter tower with a smallish fan, what's a ballpark idea of how often you need to replace the coolant due to evaporation? I mean, are we talking daily, weekly, monthly?

Any other info. or experiences with this cooling method would also be appreciated.
I work as an Operations supervisor in a large refinery here in Houston, Texas, and the two units which I supervise each have a cooling tower. Our cooling towers used to use Chlorine gas as you had mentioned, but we now use hypochlorite bleach. Hypochlorite bleach is simply a much stronger version of household bleach. In small quantities, I don't think you would notice an offensive bleach smell, as our cooling towers have no real smell. Bottom line, I think a weak bleach based solution may work for a bong. As for maintaining a PH of 7.30, we use acid which is fed in through what we call a drip-line. This would not be practical for home use of course. There are three companies that provide specialty chemicals to the plants that I know of, however, and I am quite sure that they would help you out. These companies are Betz-Dearborn, Ashland and Nalco, though I may have spelled Dearborn wrong. They have all kinds of biocides and anti-corrosion chemicals. Anyway, I figured that some here may be interested to hear about how the really big process cooling towers are maintained.
That is interesting.

But I think I got a better idea from another forum. They make biocides specifically for indoor vaporizers which are odorless and effective.
Five drops of Chlorox per gallon. Use a swimming pool tester to maintain your water balance.