Zeosand and increased filter pressure

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dpool2

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May 28, 2017
11
holland,mi
[FONT=&quot]Good Day.

Decided to try Zeosand this season and the pressure at the filter is 2x higher than with sand from last season. Followed directions (adding zeosand to filter with water in it). Backwashed for about 3 minutes (when it ran about 90% cleaner). Then finished opening the pool, pump and return lines reconnected, and turned the pump on. Pressure pegged at 60psi (highest the [/FONT]gauge will go). Last season (our first, as we moved into the home with the pool already opened for the season) the pressure around 20 and when it'd hit around 28-ish I'd then give it a backwash.

Tried backwash, then filter to waste, back to filter. No change. The output flow seems normal and nothing sounds out of the ordinary. Any thoughts? Thanks.
 
Did you run the thing at all this year before switching the sand? Where was the pressure then? It could be a bad pressure gauge. If it was left out and froze, it's ruined. 60 psi in a filter should equate to really sluggish flow. I'm not even sure a pump can generate that much pressure.
 
No, I figured the sand might be a couple years old so went to replace it. Over winter (in Michigan) I winterized the pool just fine, and actually drained the doughboy filter and put it in the garage overwinter. This spring, I pulled it out, emptied the sand, and then installed the Zeo.

So, you think that since the pressure gauge is pegged at max, it may be bad? When I unplug the pump, it drops to 60psi. 60 is the highest reading on the dial, but the needle can go a bit more.

My major question right now is one of safety. If it really is running at 60psi, can the filter container (and valves, and ports, etc) handle that? Or will the whole thing explode?

Thanks.
 
dpool2 said:
No, I figured the sand might be a couple years old so went to replace it. Over winter (in Michigan) I winterized the pool just fine, and actually drained the doughboy filter and put it in the garage overwinter. This spring, I pulled it out, emptied the sand, and then installed the Zeo.

So, you think that since the pressure gauge is pegged at max, it may be bad? When I unplug the pump, it drops to 60psi. 60 is the highest reading on the dial, but the needle can go a bit more.

My major question right now is one of safety. If it really is running at 60psi, can the filter container (and valves, and ports, etc) handle that? Or will the whole thing explode?

Thanks.
Click to expand...
When the pump is off, the gauge should go to zero. Period. Anything else and the gauge is broken.
 
Yup, it's not going to zero with the pump off.

So, again, if the return looks "normal" and the sounds are "normal" I'm probably ok for the next 24/48hours? Whole thing won't blow up?

Thanks for manning the board on a holiday weekend ! Tip of the hat
 
FYI -- sand does not go 'bad'. No real reason to replace it unless it is gummed up with pool store potions.

Good luck!
 
If gauge doesn't go to zero when shut off, replace gauge. I'm sure you did but with zeosand, you typically only use about half the amount of compared to regualr silica sand so if you just filled tank to fill line, you may have put way too much.
 
Dpool2 When replacing yours sand you put half of zeosand in your filter so if your filter takes 300 pounds of sand you put 150 pounds of Zeosand !!

I have Zeosand in my filter

Where u at in Michigan ?
 
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