You are right and I did the same. Crushed coral in the filters and aragonite substrate. It has made no difference in my pH GH or KH. So...triscuit is a professional and the explanation makes sense to me as well.bullit said:Right ill start again lol. I've always thought that when you want to raise the ph and hardness the common response is- Add ocean rock and crushed coral sand? Your theory does make sense though. .
I'm sure there are other options, but baking soda works and is also a main ingredient in chemical solutions sold by suppliers...so why pay more? It will not leave the water although other things (organics) may cause pH to decrease. But you will have to treat water change water as well.bullit said:So the only option i have is the baking soda route? Baking soda questions then lol.
How does the baking soda keep the water at 8.2? Also will this reading leave the water over time if you get me? or is it a case of getting it to 8.2 and then thats it. Then when i water change ill have to treat that aswell? My tank is 240litres btw. cheers.
Im making more sense now lol, and ill try to get a kh/gh test kit tomoz. In the meantime *** just retested my tap water for ph and its coming out at 7.2. My tank water is 7.6 so the crushed coral sand has risen it? Coral sand will rise it then?triscuit said:opcorn:
Well, call it theory if you like but I can show you the math. :lol:
Baking soda is popular because it is cheap and easy to use. And, it buffers at an appropriate pH for African lake cichlids. Most of your commercial buffers are twenty times more expensive and contain mostly sodium bicarbonate. So, sure- you have other choices, but they'll cost a lot more.
How much baking soda you need to add will be determined by what else is in your tap water. For Lestango- his hard, neutral pH water takes more buffer to reach 8.2. For my water (pH ~9, very soft), I add 1 TBS per 20 gallons in a water change. Or so. I don't really measure because I know that the existing tank water is already buffered at 8.2, and even if I add a bit more or less, my water will still be 8.2
Since you don't have fish yet (right?) I'd start by dissolving a cup of baking soda in your full tank, let it mix for a few hours, and then test your pH and KH. Your pH will probably reach 8.2 before you have the desired KH. Shoot for above 12 on the KH, but know that there's nothing wrong with KH at 20.