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Old 01-05-2013, 08:25 PM   #1
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Raising kh and ph

I have heard that baking soda is a good way to raise ph and KH. My question is how long do i need to drip the mixed water? Right now ph is 7.9 and KH is at 6.

Thanks
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Old 01-05-2013, 09:55 PM   #2
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What's your calcium, and what kind of corals do you have?

What kind of salt are you using, and what salinity are you at?
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Old 01-05-2013, 11:03 PM   #3
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Advanced aquarist.com chemistry alk and calcium by Randy Holmes is a great resource to help with this and very informative. Easy way is a two part additive of calcium and alk cause they both balance out.
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Old 01-05-2013, 11:16 PM   #4
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I use Randy's recipe to mix my own 2-part, which works really well. The reason I asked those questions was to make sure that calc & alk were in balance, and if the salinity is low, upping it will also bring up the concentration of elements along with the pH.
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Old 01-06-2013, 12:37 AM   #5
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Quote:
Originally Posted by Phranque View Post
What's your calcium, and what kind of corals do you have?

What kind of salt are you using, and what salinity are you at?
Im using reef crystals. And I keep up with my water change every week. My salinity is a bit high at 1.025 but my calcium is only 380.

I don't have much corals just yet but im planning to add More in the future as soon as my parameters are fine.
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Old 01-06-2013, 01:13 AM   #6
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1.025 isn't high at all.... I keep mine at 1.026, as do many others.

Your readings certainly aren't bad, just on the lower end. You can easily maintain soft corals (mushrooms, leathers, zoas, palys, etc) and many LPS with those numbers. First, I would bring up your salinity..... that will give you a little bit higher concentration of minerals just through your pwc's and should naturally rase your pH a bit.

If you want to get into SPS, then, yes, you will want to bring them up with either Kalkwasser or 2-part. If you decide to go with 2-part, this is what I use.....MUCH cheaper than store-bought:

An Improved Do-it-Yourself Two-Part Calcium and Alkalinity Supplement System by Randy Holmes-Farley - Reefkeeping.com

You'd want to use recipe #1 since your pH is lower, and I wouldn't worry about making the magnesium third part..... You will easily maintain that with your pwc's.

Are you using RODI water?
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Old 01-06-2013, 01:15 AM   #7
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Your salinity is fine I keep mine at .25. When you add corals softies and lps will use more alkalinity then calcium sps will use more calcium. I have to dose more alk then calcium because I'm heavy on lps. Just test and you will figure out how much to dose to keep it stable. Keep records it really helps especially if you keep adding corals which we all love to do!
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Old 01-06-2013, 02:01 AM   #8
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Thanks again for y'all inputs. I only have soft corals in my Tank right now but I want to start adding Lps and eventually sps. However, I wasn't sure if Lps would grow in my tank considering my ph, KH and calcium thats why I gotta ask before buying the corals w
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Old 01-06-2013, 02:06 AM   #9
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Yes, im using ro/di water for my tank. I'll raise my salinity next time when I do my water change and ohh yess i keep records on my tests and put it in the computer
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Old 01-07-2013, 06:23 PM   #10
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Randy holmes' DIY 2-part is a really brilliant idea and very cost effective but I'm having a hard time looking for calcium chloride dihydrate and Magnesium Chloride Hexahydrate here in Toronto. Any other suggestions on what to use to raise ph, kh, and calc?

Dana
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