Quote Originally Posted by CarlD View Post
While 925# seems like a lot, you ARE filtering a spa, which I presume requires a much higher flow rate for all the jets if it's a single pump--I'm guessing as I know nothing about spas. But he's 100% correct that the filter MUST have a greater capacity than the pump. With filter that large you may WELL see fantastic performance that makes DE unnecessary. You can always try it, and if you don't like it or you put in too much, you simply backwash and VOILA! it's gone!

Be absolutely certain he installs surge protection for your VS pump, not just GFCI. They are very sensitive to surges and lightning, having electronic circuit boards. While they do perform better than a 2-speed pump, they are more sensitive because of the electronics.

These days, with all the electronic appliances, surge protection is everywhere. We have to have it on our washer and dryer, even though the dryer is gas, because they are electronic. We have lost too many coffee makers till I put a surge protector on the latest one! We even have a fridge and range that have them on them (gas stove, electronic controls)!
Whew! Thanks CarlD. This builder said he has over 28 years of experience, and for a moment, I thought were being taken.

I will try D.E., just because I’m more curious than anything, but will wait a few weeks after startup to see how it looks without it.

As for surge protection, the builder actually recommended it. We do get some severe lightning storms over the summer months here in the Denver metro area so better safe than sorry. He just installed one on a pool that was struck 3 times before the owner got fed up (I would have been fed up after the first time). He’s telling us to go ahead and purchase the surge protect on our own as he would have to mark it up if he were to purchase it, $200 vs less than $100 from an online store I found. I take savings anytime.

He’s also having us purchase the SWCG which I have more questions on that. Should I start a new post in SWCG? I’m looking at the Hayward Goldline but not sure which one? Size?

Thanks again for all your help, and for everyone else’s help for that matter. You’ve made me feel a lot better about the filter…and the builder. I will be posting several more questions around the forum so please keep the good information flowing. I can use all the help I can get.