I have a service company, and rarely do I run into problems that I can not figure out.
I have a new client that runs a horse rehabilitation and conditioning center. They have a 2000 - 3500gal for lack of a better word trough that has a treadmill in it for the horses to run on. Since this was installed it has never been clear. I am determined to make everything work right and clear the water up.
There are 3 Martin 100 series 2hp motors that each have a Pentair Triton II Tr140's attached to them. The problem that I have run into is that they tell me they are changing the sand every 6 months or so. I took the top off one of the filters the other day and was suppries to see that the 4 month old sand is all clumped together. At first when I saw it I thought it was related to a hydraulic line that busted and dumped about 3 galling if oil into the pool from the treadmill but when I showed it to them they they informed me that it looked and smelled just like the same stuff that they clean off the bottom from underneath the treadmill every 2 weeks or so. In the 12 years I have been in this business I have never seen a sand filter this bad even with the over use of clarifies. They told me they don't really use clarifies they just use a blue dye to make the water look "better" and give it a blue tint instead of the cloudy grey color that it usually is.
When the horses get in this treadmill they do usually mess in it at least once and a lot if times more than that, and as with human waste it most of the time sinks but sometimes float.
They were using cal hypo as their sanitizer which with our high alkaline and oh water makes it cloudy enough without all this other waste in the pool. I am trying to get the to switch to di-chlor since cya will not be a problem with as much splash out, backwashing, and drain and fills as they do just to keep the bottom clean, but with di-chlor being twice the price it is difficult to get them to change over.
Ultimately I would like to get the water at least a little clearer if not totally clear if possible and to a point where they won't have to change the sand every 4 to 6 months
I have spoken with the folks that manufacture and install these and they tell me that there are facilities that use there treadmills without as much trouble as they are having.
If anyone has any suggestions or ideas I am all ears. I am even willing to spend a little money if it means we can get better water clarity and develop a routine for them to use to achieve those results.