Help! Difficulty reading GH in new tank. - The Planted Tank Forum
 
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post #1 of 3 (permalink) Old 04-03-2005, 07:59 AM Thread Starter
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Question Help! Difficulty reading GH in new tank.

Just launched a new 90 a few days ago. My well tap is virtually zero in GH and KH and 5.3 pH rising to 6.4 or so after outgassing for 24 hours. I added about 4.5 Tablespoons of Epsom salts to the 90. I am using an Aq. Pharm. GH test and I can't seem to get a reading (or else its Rift lake high??). Chuck Gadd's site says this would be about 19ppm Magnesium. I usally add about a 1/4 to 1/2 teaspoon of epsom salts to 4 gallons of change water for my smaller 26 gallon tank. My GH in the smaller tank sticks around 150ppm. I know at one point I added so much Equilibrium I had it up to 306 ppm by accident once.

The pH in the 90 gallon tank is now about 7.0. I filter with oyster shells for added CaCO3. The eco strangely seemed to raise the pH and I noticed a few white stones which might have some calcium in them. But that wouldn't be a bad thing with my soft water.

Also, I just got some calcium chloride. Do I put 3 parts of calcium to one part of epsom or is it the other way around. And I need to add some more epsom salts and maybe some calcium chloride, right? I think I get enuf Ca from the Oysters. Do I need to add a minimum of 4 to 8 more tablespoons epsom to get to 3 dGH? It seems like way too much??? I am a bit !! Muchas gracias, amigos. bob





Three Tanks...Eheim 2128 & XP3-90G, Eheim 2128-65G, Eheim 2232-25G.... Tek 4x54 watt T5-90G, Aqualight 96watt PC 65G low tech, 65 watt Aqualight-25G.... Hydors-90G & 65G ... Flourite in 90, 65, & 25 Gallons, .... Auto Water Change/Auto dosing on 90 & 65 gallon..... AGA member......
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post #2 of 3 (permalink) Old 04-04-2005, 09:01 PM
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Hey Bob,

Before you add more CA or Mg, take a sample of water to a local lfs or petsmart. Let them test you GH.

Not that adding CA or Mg is bad. It's good to know what the base line is

Thom
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post #3 of 3 (permalink) Old 04-04-2005, 11:18 PM Thread Starter
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Yeah, thats a good idea. Thanks Thom. I'm about out of GH test so I might try another brand. I have a bit of leftover Equilibrium to use, if I get the jackhammer out. bob





Three Tanks...Eheim 2128 & XP3-90G, Eheim 2128-65G, Eheim 2232-25G.... Tek 4x54 watt T5-90G, Aqualight 96watt PC 65G low tech, 65 watt Aqualight-25G.... Hydors-90G & 65G ... Flourite in 90, 65, & 25 Gallons, .... Auto Water Change/Auto dosing on 90 & 65 gallon..... AGA member......
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