Is DE powder all the same or does quality vary by vendor / brand? Curious to know if any thoughts or advice on this one before I buy some DE powder for my filter change (Pentair quad de).
Thanks
Thanks
"should" being the operant word.....it should pretty much be the same within its respective grading class.
There are ranges of differing components acceptable in each. Pool grade de due to the process used can be anywhere from 60-70% crystalline silica. One brand may be more another may be less But in that range. Food grade is less then 1% crystalline silica so again depending on the brand you could have different amounts under 1%. Also depending on where it’s mined various other minerals may be in it which contributed to color variances etc."should" being the operant word.....Has the quality been somehow compromised over the past few years?
I've been using stuff called "Splash". One of my two local pool stores sells this so that's what I've been using the last 2 years - interesting that the worst of the filter pressure issues coincide with that timeframe.I noticed that it’s a lot more “powdery”.
Lots of variables can play into pressure readings. Air trapped in the system because it wasn’t bled properly can increase pressure. Blockage on the suction side that you‘re unaware of could reduce pressure. I think to begin to diagnose more effectively in this scenario you would need a setup that’s used in commercial pools that shows influent and effluent pressures. Then you could baseline with differing types of clean de to see if there was really an impact on pressure differential by using one brand vs another.Most interesting. What I'm seeing is that, when I take apart my tank, the DE does not seem to be adhering to the grids like in the past. Lately I've tried draining the tank without backwashing first - just to see what everything looks like inside. There was relatively little DE coating the grids - or at least very uneven. Alot near the tops of the grids but not as much towards the middle and bottom. However, something seems contradictory in this....less DE on the grids should = LOWER pressure, right? Water would pass through more easily. Not sure on that one...
Good post. All very interesting.Lots of variables can play into pressure readings. Air trapped in the system because it wasn’t bled properly can increase pressure. Blockage on the suction side that you‘re unaware of could reduce pressure. I think to begin to diagnose more effectively in this scenario you would need a setup that’s used in commercial pools that shows influent and effluent pressures. Then you could baseline with differing types of clean de to see if there was really an impact on pressure differential by using one brand vs another.
Just curious why you started looking for DE alternatives?I've never noticed much difference from one brand to the next.
I have tried the cellulose fiber substitute (specifically, Jack's Magic brand) and it works ok, but is a royal mess when doing a deep clean (more so than DE). I also didn't feel that it performed quite as well as DE.
Right now, I'm trying CelaPerl (a Perlite alternative...supposedly non-toxic...you use exactly the same number of scoops, but it is half the weight of DE). So far, the CelaPerl seems on-par with the performance I've gotten from DE.
I was attracted to the fiber based on the fact that a very small, very light bag is sufficient for a full fill of my filter. Also looking to avoid the dust. There’s no getting around the dust, it turns out. And I found the fiber more irritating on the skin and more of a pain to work with. The Perl is indistinguishable from DE except for the weight.Just curious why you started looking for DE alternatives?
I think I had that once also. Didn't care for it if I recall correctly.I have tried the cellulose fiber substitute
Wow....that would sure work for me at least right now! The stuff I recently got from the pool store is Dicalite - pretty common brand I believe. I'll try it and see if it makes any difference in the length of the filter cycles compared to this "Splash" DEless build up in the lawn