Are two filters better than one?

[InfinityPools]

Heres your two options that I know Of.

1. replace your sand with Zeobrite. Filters down to 1 Micron

2. Kind of a stupid looking product but it does work "Slime Bag"

http://www.cleanerpools.net/

Good luck

[waterbear]

Heres your two options that I know Of.

1. replace your sand with Zeobrite. Filters down to 1 Micron

2. Kind of a stupid looking product but it does work "Slime Bag"

http://www.cleanerpools.net/

Good luck

Even DE ONLY filters to abut 5 or 6 microns. The claims for zeolite are based on the 'pores' in the grains. However, the grains are about the same size as a sand grain and water is going to take the path of least resistance so most of the filtering will take place BETWEEN the grains, just like with sand. The filtering ability is only slightly better. It is good at ammonia scavaging, however, so it might help prevent the formation of CC. Zeolite is the new "craze" in the pool industry but it has been used in aquariums (primarily for it's ammonia scavaging properties and not for mechanical filtration) for many years now. As a mechanical filter is has proved to be not much better than sand. The "Slime Bag" is a micron filter bag. Once again these have been used in aquariums for quite some time now. They do work but have to be changed frequently and can create some (or quite a bit!) backpressure in a pressurized system. In aquariums micron bags are ususally used in non pressurized 'wet/dry' or sump filters with a low flow rate.

[KesLongwood]

ok, I've noticed that the all around answer to this topic hasn't been answered, atleast not that I have seen . Does a "Duel" Filter system work or not? I.E. A Pool->Sand->Cartridge->Pool set up with a bypass between the Sand and Cartridge connection so its Pool->Sand->Pool. Right now I have a Cyclone 200 Cartrage with a 1.5 HP Dual Speed Pump (and to me, its a *****). I have been thinking about getting a BaquaPure 2600 Sand Filter System and start using Baquacil.

[duraleigh]

Keslongwood,

The answer seems pretty clear to me. Two filters ARE better than one. In fact, three filters are better than two. Come to think of it, four would be even better. Start with sand, then into a cartridge and then into a DE.

It can be as complex as you like but, simply, more filtration will result in cleaner water. Would I ever do it? Of course not. My pool is crystal clear with a sand filter.

As an aside, I noticed the filtration at one of those huge Ripley's aquariums is sand....I think they had three set up in series.

Now, the real point of my post. I would suggest reading on this forum the experiences people have had with baquacil. You may very well rethink baquacil as your sanitizer. I'm pretty sure others will opine soon....even tho we're sorta' hijacking the thread.

[KesLongwood]

Using Baquacil is still in the air, I am however trying to get the filter for it, BaquaPure 2600 Sand Filter. Its basicly just like every other sand filter, cept its blue, and I like blue ^ ^. I did to a thread asking on where I can find one.

[Bleach=Chlorine?]

Using Baquacil is still in the air, I am however trying to get the filter for it, BaquaPure 2600 Sand Filter. Its basicly just like every other sand filter, cept its blue, and I like blue ^ ^. I did to a thread asking on where I can find one.

Are you serious?! OMFG

[waterbear]

ok, I've noticed that the all around answer to this topic hasn't been answered, atleast not that I have seen . Does a "Duel" Filter system work or not? I.E. A Pool->Sand->Cartridge->Pool set up with a bypass between the Sand and Cartridge connection so its Pool->Sand->Pool. Right now I have a Cyclone 200 Cartrage with a 1.5 HP Dual Speed Pump (and to me, its a *****). I have been thinking about getting a BaquaPure 2600 Sand Filter System and start using Baquacil.

The biggest problem I see with using two filters in line would be backpressure and flow rates. Not sure what it would take to over come them but I know it can be done because many commercial pools use multiple filters (although I don't know if they are in series or parallel. It would seem that in series they would increase the backpressure and decrease the flow rate and in parallel the opposite would happen...I know this happens in aquarium filtration because I have experienced it)

[Aranon]

I have two filters. I have A Dynaflo 1 Hp two-speed pump hooked up to a Hayward 300 lb. sand filter with 300 lbs of filter sand from Leslie's, and then it goes to a Pentair 150 cartridge filter and then to the pool. Even on low speed right back to the pool I have tremendous flow.

I have it hooked up to ten 2' x 20' solar panels on top of our two story house and on high speed it has great pressure. You can see the water current going way out toward the middle of the pool. On low speed, it does not have enough pressure to to go up two stories, but it didn't when I had it only hooked up to the cartridge filter. I leave it on low speed during the night and high speed when I am using the solar panels.

I bought the Hayward S224T used on ebay for $ 124 including freight. It looks brand new. I plumbed everything with 1 1/2" PVC. It works great.
My pool is crystal clear.

Aranon

[duraleigh]

Aranon,

On low speed, it does not have enough pressure to to go up two stories, but it didn't when I had it only hooked up to the cartridge filter.

Once your system is primed, the vertical height of any part of your system, including solar panels, is irrelevant to the pump. It will circulate thru the panels just fine on low speed.

[Aranon]

I can have the pump on high and everything is going good and I got lots of pressure and everything. The water is going up through the 1 1/2 PVC to the second story flat roof and I got warm water returning, but when I switch the pump to low speed nothing changes for about a min or so and then the water stops flowing. I waited for about five min to see what would happen and nothing. Everything is running, but no water is returning back to my pool.

I switch back to high speed and in about 30 seconds the water comes back on. Tried this several times and same effect every time. My only conclusion is that on low speed the pump does not have enough power to push the water up that high and through 10 solar panels. If you got any solutions, I am up for them. When I had the solar panels on the ground just trying them out it worked on low speed and the water seemed to come out hotter.

I keep wrestling in my mind would it be better to have low speed and hotter water but less flow, or high speed with warm water but more flow. On one had I look at this that yeah, the water is hotter at low speed but I am not putting much water in the pool at a time so it is not really doing much. ( Its a big pool, 18' x 40' oval by 54" high) On the other hand I am adding large volumes of water at higher pressure that is putting in a little cooler water but lots of it and shooting it out really far toward the middle. My thinking is that the water turnover rate is going to be greater at high speed and should bring the temperature up quicker at higher volume and pressure than hotter water at low pressure, and low volume. Sort of like which is going to heat you bath tub up quicker if you start with a tub full of cold water, a small trickle of hot water coming in at 100 degrees or a large full blast volume of 90 degree water. The difference between the low speed (when it was working on the ground was 10 to 11 degrees difference) Right now my water at high speed is coming out at around 90-92 degrees from the solar panels.

Pleased advise how the pump should operate fine on low speed going up 2 stories. From what I gather low speed is 1/3 hp and high speed is 1 hp.

Thanks
Aranon