Good morning, Cdchris -- the one I use has a 25 micron pre filter down to a 1 micron final: Pentek DGD-2501 Spun Polypropylene Filter Cartridge, 10 Scientific
In our tutorial on filters in pool school, the article cites "about 10 micron" for cartridge-style filters, so that would be my guess on the Pentair, Chris. If this is true, the extra fine filtering of either the slimebag in pool or pre filter on additions should assist with some of the iron.
Duraleigh...back in the deep-end phosphate threads this "no warranty" position of Pentair's and possibly Hayward's SWG was something I became aware of and talked to people in the industry about. Hayward's position is similar but less stringent in that if you test the cell at a tests center and it fails, they'll honor the warranty...but if it passes, you're on your own.
That's why I logged my experiment for much of the summer in terms of "was my cell producing FC dspite extremely high po4 levels? - Yes." In my case it did scale but it also shed the scale and didnt interfere with production.
Their rationale is the phenom at the engineering level is that a formula of ch + po4 + temp + ph --- at different variables, can cause po4 scaling on the cell plates and cause failure. Some authors at industry mags like Aqua have referred to the mfg levels as "not real world" -- a position that applied to Pentair.
But even though there is an Eng scenario behind the position on phosphates with the manufacturers, the customer service reps will instead say the same kind of nonsense/stuff pool stores do about algae food (I know...I argued with them about it at Hayward and eventually escalated the call to someone senior who then wrote to me that if I used a test center theoretically and it failed, they'd honor the warranty
)
So phosphate scaling can be a real thing, but the issue gets lost in the mythic-jazz-misinformation/spin about po4 as algae food...which as we know, doesn't matter in a TFP-level chlorinated pool.
But they can't actually say a predictive level because there are four variables to control for, (po4+ch+temp+ph) plus a fifth slippery one, which is rate of flow/use time. In boiler phosphate scale research, for example, continuous flow seems to reduce scaling.
In our tutorial on filters in pool school, the article cites "about 10 micron" for cartridge-style filters, so that would be my guess on the Pentair, Chris. If this is true, the extra fine filtering of either the slimebag in pool or pre filter on additions should assist with some of the iron.
Duraleigh...back in the deep-end phosphate threads this "no warranty" position of Pentair's and possibly Hayward's SWG was something I became aware of and talked to people in the industry about. Hayward's position is similar but less stringent in that if you test the cell at a tests center and it fails, they'll honor the warranty...but if it passes, you're on your own.
That's why I logged my experiment for much of the summer in terms of "was my cell producing FC dspite extremely high po4 levels? - Yes." In my case it did scale but it also shed the scale and didnt interfere with production.
Their rationale is the phenom at the engineering level is that a formula of ch + po4 + temp + ph --- at different variables, can cause po4 scaling on the cell plates and cause failure. Some authors at industry mags like Aqua have referred to the mfg levels as "not real world" -- a position that applied to Pentair.
But even though there is an Eng scenario behind the position on phosphates with the manufacturers, the customer service reps will instead say the same kind of nonsense/stuff pool stores do about algae food (I know...I argued with them about it at Hayward and eventually escalated the call to someone senior who then wrote to me that if I used a test center theoretically and it failed, they'd honor the warranty
)So phosphate scaling can be a real thing, but the issue gets lost in the mythic-jazz-misinformation/spin about po4 as algae food...which as we know, doesn't matter in a TFP-level chlorinated pool.
But they can't actually say a predictive level because there are four variables to control for, (po4+ch+temp+ph) plus a fifth slippery one, which is rate of flow/use time. In boiler phosphate scale research, for example, continuous flow seems to reduce scaling.
