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pool filter sand changes PH?

This is a discussion on pool filter sand changes PH? within the Beginner Freshwater Aquarium forums, part of the Freshwater Fish and Aquariums category; --> Well that changes things. Having anything over ~80ppm is considered a buffering ability. It looks like whatever chemical that the water softener is using ...

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pool filter sand changes PH?
Old 04-18-2009, 08:45 PM   #21
 
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Well that changes things. Having anything over ~80ppm is considered a buffering ability. It looks like whatever chemical that the water softener is using is dropping your gH but not your kH. This will create a ping pong effect everytime you do a water change. For the purpose of cycling, I wouldn't change anything until your tank is fully cycled. I would then add peat to your filter for starting an ion exchange that will drop your kH, and subsequently your pH before you add fish. Then the problem comes with water changes. My suggestion would be to prepare the amount of water you will need 2-3 days before your water change and put a large media bag full of peat in there and an airstone for circulation. If you have room somewhere I would suggest a large trash bin or drum of some sort to fill up and have water ready for multiple changes so you don't have to do it every week. I have never had to do this, so someone that has may have a better/easier suggestion.
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Old 04-19-2009, 12:13 AM   #22
 
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i was thinking i might be able to use my RO unit. i would have to get a bigger tank for it, my 10g tank would take a long time to do water changes.
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Old 04-25-2009, 11:35 PM   #23
 
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*update*

i just filled my tank with Ro water that had a ph of 6.4. i took out all the pfs washed it throughly and returned half back to the tank. 12 hours later and my tank water went from 6.4 to 7.4. i am testing some sand in unsoftened city water to see if that makes a difference.

it seems like pfs is far from ideal to use as a substrate. somehow it keeps altering my ph. i wanted something soft for my cories but pfs does not seem like a solution.
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Old 04-26-2009, 09:28 AM   #24
 
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*update*

i just filled my tank with Ro water that had a ph of 6.4. i took out all the pfs washed it throughly and returned half back to the tank. 12 hours later and my tank water went from 6.4 to 7.4. i am testing some sand in unsoftened city water to see if that makes a difference.

it seems like pfs is far from ideal to use as a substrate. somehow it keeps altering my ph. i wanted something soft for my cories but pfs does not seem like a solution.

i just tested the ph of the untreated city water with the sand. the ph has gone up just like the softner treated water. whatever is in the sand that affects the ph would do so with whatever type of water i put in. this sand has got to go, and i need to find a suitable replacement.
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Old 04-26-2009, 11:07 AM   #25
 
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i just tested the ph of the untreated city water with the sand. the ph has gone up just like the softner treated water. whatever is in the sand that affects the ph would do so with whatever type of water i put in. this sand has got to go, and i need to find a suitable replacement.
It seems logical to me that the sand intended for a swimming pool would have properties to raise the pH. Pools (public) maintain alkaline water not acidic for health reasons (don't understand why, just commenting). If you really want sand, either buy it from an aquarium store or others have said the play sand from Home Depot is OK; iof the latter you might want to test some just in case. Alternatively, small grain regular quartz aquarium gravel will certainly not affect pH.
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Old 04-26-2009, 11:42 AM   #26
 
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It seems logical to me that the sand intended for a swimming pool would have properties to raise the pH. Pools (public) maintain alkaline water not acidic for health reasons (don't understand why, just commenting). If you really want sand, either buy it from an aquarium store or others have said the play sand from Home Depot is OK; iof the latter you might want to test some just in case. Alternatively, small grain regular quartz aquarium gravel will certainly not affect pH.

definetly dont want to try any other sand unless its intended to be used in an aquarium. i got a couple pet stores i am going to talk to, see if i can get the correct sand. most stuff i see online is for saltwater or has buffering abilities.

would stuff that is acrylic coated be ok to use?
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Old 04-26-2009, 12:22 PM   #27
 
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definetly dont want to try any other sand unless its intended to be used in an aquarium. i got a couple pet stores i am going to talk to, see if i can get the correct sand. most stuff i see online is for saltwater or has buffering abilities.

would stuff that is acrylic coated be ok to use?
I saw your question in another thread and didn't reply as I don't know, but as it's come up here again I will say that years ago I bought some "black" gravel intended for aquarium use (from a very reputable store) and after about 5 years the "black" started wearing off and the gravel was blue. I gave it to someone for other use, and I can't remember what it was but obviously it had been coated with something to make it black. It was shiny like acrylic might be, so I mention this just as a caution. Others may have had more experience with these things. Coating grains of sand must be quite a process, as the grains are so small. Personally, I would avoid such stuff just in case, rather than risk the fish.
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Old 04-26-2009, 03:35 PM   #28
 
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I saw your question in another thread and didn't reply as I don't know, but as it's come up here again I will say that years ago I bought some "black" gravel intended for aquarium use (from a very reputable store) and after about 5 years the "black" started wearing off and the gravel was blue. I gave it to someone for other use, and I can't remember what it was but obviously it had been coated with something to make it black. It was shiny like acrylic might be, so I mention this just as a caution. Others may have had more experience with these things. Coating grains of sand must be quite a process, as the grains are so small. Personally, I would avoid such stuff just in case, rather than risk the fish.

fish store recommends the tahitian moon sand.
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Old 04-30-2009, 07:27 PM   #29
 
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i just bought 2 bags of colorquartz crystal. it is suppose to be guaranteed to be inert. but after a day or so it alters my ph. just like the PFS did. i am so close to just breaking the tank down and selling the parts. i have already spent hundreds on substrates that i cannot use. i dont know what to try now. i have tried RO, softened, and city water all with the same result. i even got a 55g drum in my garage storing RO water, but the tank water just changes ph out of range.
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Old 04-30-2009, 08:41 PM   #30
 
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This is really weird, but after using the colorquartz crystal and having the same result, it tells me that it wasn't the pfs. Another thing to try is since you have a bunch of RO water in a drum, get two small containers of it and add pfs to one and the colorquartz crystal to the other. Test pH before and a few hours after adding the sand. Run both the normal range and high range tests and make sure that your bottles are not older than 2 years. They have a manufactured date stamped right on the front of them.
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