Should I remove the filter cartridge before I vacuum to waste?

Problem - I have a 10 year old Shasta lap style pool and spa. The "quikclean ll step" pop up on the step of the spa is spraying about 2-3 feet in the air when...

Yesterday morning my pool was sparking clean for the first time in about 5 weeks. We had more rain and excess water drained thruthe vent.

Later I looked and there...

Does anyone have an aquabot bravo? I can't find any reviews on them. Please tell me the pros and cons. Are they good for L-shaped, vinyl lined pools?

When I backwash, the water comes our clear. If I tap on the side of the drum, I can see some cloudy water coming out. However, when I remove the cover of the drum, the...

My pool holds 170,000 gallons. My initial alkalinity level was 290 ppm. Adding muriatic acid had dropped that to 200, but now my pH is at 6.0. How low can I allow the pH...

The manual for my Pentair FNSP60 says to put in 6 lbs of DE after removing and cleaning filters. If all I do is a backwash, do I still put in 6 lbs? I thought the guy...

Hi Everyone,

I have a Hayward DE filter and separation tank controlled via multiport valve. (I don’t have model numbers handy). All grids were replaced last...

Wow...my first post! :D I have some areas in the bottom of my new pool that look like little sediment deposits. We have sand under our pool and it is not exactly even -...

Hi :)

I have a slight problem with the suction to waste option on my multi port.

(Its very similar to a Hayward filter)

The PSI reading when switch to waste is...

I'm trying to narrow down the cause of a sudden rise in pressure (even after a good backflush). I suspect contamination on the filter bed. I found what looks like gooey...

Hi, experieincing something new here. The discharge pressure is up to 22 from a normal 15 psi. I flushed the filter for two minutes this morning, no change. The filter...

We are having problems with the DE settling on the bottom of our system. Which makes the pressure stay up on the pump. Any help would be greatly appreicated. I'm...

A few weeks ago my aunt and I tryed to clean the DE grids, and noticed some tears. We went to Lelies, bought new grids, and reassembled the filter.
We made certain that...

When one is used in the pump & filter, how should I store my spare? Do I have to add chemical solution?

I heard after a few months you have to add a chemical...

Above ground, self priming 5000 gallon plunge pool with Haward Sand Filter, Ecomatic Salt Water Clorinator and newbie pool person.

After I backwash, the psi on the...

Any help would be appreciated. My PH is correct in my above ground pool but no matter how much chlorine i put in the pool wnen I test the water it gives me a negative...

I am new here so please bear with me if these questions were already asked somewhere (looked but couldn't find that they had been).

1. do I need to run my sand filter...

I have a problem with my pool. I clean my pool with the vacum for a few minutes and it looks like it's working but then all of a sudden the dirty water comes back throgh...

I have a 18x33 above ground

currently have a hayward cartridge and it looks like I may need a new unit

anyone have any rave reviews?