Add plants to lower PH?? - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 07-06-2011, 03:42 PM Thread Starter
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Add plants to lower PH??

Hello out there!!

I'm new to the hobby (started my tank on the 4th) and my ph reading is 8.0. Prior to filling my tank, I tested the tap and got a reading of 7.1 ph and 17.2 ppm hardness. All I've done is added CaribSea eco-complete (planted) and dechlorinator. Why did my ph skyrocket?

I went to CaribSea’s FAQ section on their website where they stated that it is possible to raise the ph with their product and that adding plants will help reduce the ph. Can anyone back this up? I’m afraid that adding plants to an environment they’re not happy with could spell disaster.

Help!! Thanks!
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post #2 of 6 (permalink) Old 07-06-2011, 04:38 PM
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I believe the answer is that Eco Complete is a natural product, so it varies quite a bit in its properties. Some batches have been known to leach carbonates, raising the KH and pH. Water changes can help with that, but unless you plant a dense planting of vals I doubt that plants will do much for the pH. (Vals can consume carbonate ions.)

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post #3 of 6 (permalink) Old 07-06-2011, 07:15 PM
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It would seem to me that plants uptaking calcium may actually lower pH to some degree. I can't say whether it would be any noticeable amount though.
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post #4 of 6 (permalink) Old 07-06-2011, 09:36 PM Thread Starter
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Thanks ya'll!

One more question- When I do a water change, should I use distilled water? Will that better my chances of lowering the ph?
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post #5 of 6 (permalink) Old 07-06-2011, 09:39 PM
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If you use distilled water it may reduce the pH more, but it will also reduce the GH, possibly by too much. Unless you have specific problems caused by high pH, and I doubt that, then just using tap water, with dechlorinator, is far better.

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post #6 of 6 (permalink) Old 07-06-2011, 09:59 PM
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Not sure if you need to be too worried about plants. Fish probably but not plants. Most plants will handle it without any issues. You do need to consider gh/kh instead if you plan to keep plants that demand softer or harder water.

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