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Thread: PH way high? Reply to Thread
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  Topic Review (Newest First)
01-18-2003 04:20 AM
Skysong pH rises when the trapped CO2 gases off, so maybe that's it.
11-11-2002 04:07 PM
ridns I wish I had the $$$ to buy the CO2 equipment that is really needed to have an accurate and stable supply for at least my 55gal tank. Maybe Santa will smile on me. (I hope!) :hehe:
11-03-2002 02:56 PM
SNPiccolo5 I have the same test kits you do! I'd like to get one for Nitrates, but they cost a lot. That CO2 forumula is very useful indeed!

11-03-2002 12:41 AM
ridns I have a "Fresh Water Master Test Kit" from Aquarium Pharmaceuticals. It tests PH, KH, GH, Amonia, and nitrite. After I know this I put the numbers into a chart I found on "The Krib" and it tells me CO2. I have to go to the dry tab kit I use for my salt water tanks to check nitrate. This kit is also from Aquarium Pharmaceuticals. :hehe:
11-01-2002 09:39 PM
SNPiccolo5 What type of CO2 test kit did you get... all the ones that my LFS sells are like $20 since it comes in a combo pack..but I would like to get one!

11-01-2002 12:15 AM
ridns update: ph 6.8, KH6, GH6, and since I added a reactor that works, CO2 25. I just got lucky that my DIY CO2 is delivering the correct amount to the reactor I guess. :hehe:
10-29-2002 05:04 PM
ridns I had that same problem with my hex tank when I started it. I had a ph around 8.0 and it wouldn't come down for a long time. Since then I have planted it and added fish. The ph went to around 7.6 or 7.8. and the water was still very hard. From the start it tested about 16 or 18 GH and KH. The water in my area has that problem and I am aware of it. Well, I did water changes with water from my purifier and the hardness started to drop. Then I added CO2 with a DIY system. Now it is checking GH6, KH6, PH7.4. I believe it takes a while to bring down the ph having to first deal with the hardness issue. We'll see if my next checks bear this out.:hehe:
Oh, I forgot... my plants are growing fast and the fish seem quite happy.
10-23-2002 02:12 AM
SNPiccolo5 I know exactly what you mean! My tap water has been (since I started testing) 8.0 from the tap with nothing being able to change it (hard!). Well, I was testing yesterday, and instead of my usualy blue, I saw green!! Wow!! Green!! The pH dropped from 8.0 to 7.6? It was wierd!

10-21-2002 11:31 PM
Originally posted by Turbosquid
I have nothing else in that tank except some real plants and a fake log.
Let's go back to the fake log... I think you need to do that suggested test of a jar of water soaking the gravel and another of the fake log.

It's the easiest and fastest thing to do.

Also, we have all assumed that the tap water is stable, it can on occasion, change dramatically if the water authority has worked on lines or had a problem of some sort.
09-30-2002 12:05 AM
m.lemay Silica,if I'm not mistaken, is pretty inert. It probably wouldn't affect the ph because its not very soluble. If thats all you have in there, then I would do 10-20% water changes every few days till you can get the ph to stabilize around the 7.6 of your tap water. It could take a while. Don't use ph down or anything else like that. Once you get your ph to the ph of your tap water, you shouldn't have any problems bringing it to 7.2 or7.4 with the CO2 injection. It's really too much trouble to fight your tap waters natural ph unless you want to be a purist. If you really want to lower it some more you can use peat moss or pillows. Do not use those PH stabilizers which use phosphates to stabilize your ph at a given value. They will only give you an algae problem that'll make your ph situation a cake walk by comparison. It is what it is, don't kill yourself trying to fight the natural equilibrium of your tap water. Your c02 reactor should make a huge difference and the ph should go down.
09-29-2002 11:26 PM
Turbosquid I have a feeling it's my gravel. I went to the store and checked out the bag a little said it contains Silica which is known to be a carcinogen...but other than that I know it has to be the gravel. I have nothing else in that tank except some real plants and a fake log. Will the effectiveness of the gravel ever wear down or will it always have the same potency as far as being a buffer?
09-29-2002 02:13 AM
m.lemay Well, the ph of your tap water is 7.6 and the ph of your tank is 8.0. If your using tap water to fill your tank and there was nothing in the tank to raise the ph, the tank water would also be 7.6. Save for maybe some outgassing which might affect the ph slightly.
What all this means is that there is probably something in your tank raising the ph. It probably should be removed if you can figure out what it is. The point being that even if you add the bottled water with a ph of 6.4 it will probably rise back to 8.0 from the substance in your tank which is alkaline. Whatever that may be. A ph of 7.6 aint bad to start with and it can be lowered with co2 and water softening pillows. Again if theres something in the tank that keeps yo-yoing your ph back up you'll be forever fighting this ph battle. By the way I posted the "Anonymous" post, I gues I wasn't logged on.
09-29-2002 01:26 AM
Turbosquid The water hardness test I performed was from my tank water...I havent' tested the tap water yet. I have tested the tap water for ph and its' around 7.6. The bottled water is usually around 6.4 or less. I know we have hard water becuase this area is mostly limestone. Willl those water softening pillows work? and I'll probably need like 3 for a 55 gallon tank. I guess I should test the tap water for hardness.
09-27-2002 08:57 PM
Anonymous Ok. Have you tested the water straight from the tap yet? Or did you add it to the tank and then test it? That wasn't clear in your post. If you add it to the tank before you test it you're getting a test for the tank and not actual tap water because it may be dissolving minerals in the tank. If that is the gh and kh for your actual tap water, you've got some serious hard water.
You could soften it with a water softening pillow. That won't do you any good if something in the tank is making your water hard.
09-27-2002 03:53 AM
peterinwa I'm very much a novice and don't understand most of the other replies. But I recently killed most of my fish trying to lower the pH with pH Down. I did it over two weeks and thought everything was fine. But the great quantity of pH Down stressed the fish and they got a bad case of deadly ich.

I put some of the slate rocks in one vase with water and some of the gravel in another with water. I found that the gravel caused the pH to rise .2 every day! I could have added pH Down forever and never solved my problem.

So I'd suggest you fill a glass vase or large jar maybe 1/3 full with your gravel/sand and the rest with water, and perform your own test.

I don't know how rare it is, but that was my problem.

Thanks to Gareth for sending me to this great website!

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