To raise PH in a tank, would limestone rocks help??

mykidsmylife

Princess of Peons
Aug 26, 2005
925
0
0
Indiana, U.S.A.
This isn't my tank, but my best friends. She uses her city tap water on her 125g tank and the ph is always really low. I've suggested using crushed coral in her media baskets. She hates the look of the crushed coral and wont use it as her substrate, but the coral in media basket does help up the ph and keep it more stable. Tank is not planted and is, probably, over stocked with large cichlids and oddballs.

She does use PH increasing products against my advice. I am trying to think of things to help keep her PH stable, rather than the way it bounces around with the chemicals. I've given the "Stable PH is better than bouncing and fish don't read PH" speeches to no avail.

Since we are in Indiana, and I live in the country, limestone rocks are a normal thing and all I have to do is walk through the pasture and woods to get an unlimited supply. I know to be cautious and take none from the fields due to chemicals.

SO...here is the question. Do you all think that the limestone stones/rocks would help raise the PH in her tank more naturally than using the water "conditioners" such as PH Up ( I think that's what it's called) Her PH is naturally around 5.5 and with the crushed corals in media baskets it is slightly over 6 now. I'm just trying to think of some way to keep her from using any added chemicals. She has no problem with me adding a rock pile into the tank or doing some cave work with it.

Do you all see any major drawbacks to this? I would never dream of putting limestone in my tanks (I'm on a well, guessing by our location I'm sure our well comes from limestone beds, ph is high enough.:cool:) Does anyone have any other ideas or advice. This was my grand idea today while trying to come up with some new rocks for my tank. Am I totally off the mark with this? I will greatly appreciate any advice or comments you may have on this.
 
Limestone rocks should increase the pH for her. I've used them in my tanks with no problem. However, my water is well water like yours with a pH of 8.3 to start with...

Keep an eye on the pH if you do give them a try. I bought my limestone rocks from a landscape place - that way I could get good ones for building caves.

Lisa
 
What's the pH of her tap? It's quite likely that the only chemical your friend needs to use more of is chlorine neutralizer.
 
What's the pH of her tap? It's quite likely that the only chemical your friend needs to use more of is chlorine neutralizer.
The PH of her tap is slightly below 5. After it sits and gasses off it hits the 5.5 mark. She doses with Prime as per bottle instruction for chlorine.

Will the Prime raise the PH in her tank?
 
Ouch! That's low! Most times when pH is too low it's because of a lack of water changes. They may help other things in this case, but they're not going to raise the pH. Limestone away!
 
She does weekly water changes "most of the time"..her words not mine. lol. Yes, I'm sure it would help, considering I feel the tank is overstocked and she is a heavy feeder.
 
Limestone is just calcium carbonate. As it erodes into the water, it will raise both the pH and hardness. As with any chemistry altering substance, start adding it very gradually and go from there until you get a stable level where you need it.
 
Have you ever tested her GH and KH?
 
Have you ever tested her GH and KH?

I haven't personally but I know she did have it tested not long ago and I can't remember what she told me it was. I will test it myself prior to going forward with adding the rocks. Would you refresh my mind with where those numbers should stand? Or perhaps what I need to worry about with them?

Thank you vwill. I'm not sure I've thought it out enough yet to have realized not to do all the rock work at once. I have to mull things over and think them through for a bit prior to actually doing them. I'm a list maker and planner so that is one thing I know I will add. :D
 
The main thing is the KH. It's basically a measure of how resistant to pH change the water is. I would expect it to be very low, probably less than 2 dKH and a good reading for a wide variety of fish would be anywhere from 5 to 7. If it were an African tank you could triple those numbers and they'd love it. Personally if I had soft acid water coming out of my tap I'd be keeping all the sweet blackwater stuff that really needs it. But to each his/her own!
 
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