Black Blasting Sand & pH? - The Planted Tank Forum
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post #1 of 6 (permalink) Old 07-21-2016, 04:17 PM Thread Starter
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Black Blasting Sand & pH?

Hello,

quick question, does black blasting sand drop your pH? As I understand it, it is inert, however, I keep having pH problems, it drops to 5.0 or less.

I use neutral regulator, salt, sea salt, and marine buffer, but I still seem to have problems. Does the blasting sand absorb "metals" or other minerals that would normally drive or keep pH up?

Thanks
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post #2 of 6 (permalink) Old 07-21-2016, 04:40 PM
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I have blasting sand in all of my tanks except one and all of my tanks have rock solid water parameters. What else do you have in your tank for wood, peat, etc etc. Whats your water parameters out of the tap? Out of the tap after sitting 24 hours?

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post #3 of 6 (permalink) Old 07-21-2016, 04:46 PM Thread Starter
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good question sir, I did have plants within the pots w/ iron wool.

I have not tested my pH out of the tap or 24 hrs later. Plz explain the 24 hour deal with tap water? I did not know it would begin to drop in pH if the water was just sitting there.

owner: Archer Fish Aquariums, Brooklyn, NY
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post #4 of 6 (permalink) Old 07-21-2016, 04:55 PM
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As thedood said, its inert. I also use it in all my tanks and never have any flux ni pH from the black diamond 'sand' I use (from tractor supply co). As far as I know it doesn't absorb minerals, its just coal slag.

Due to photobuckets new bs cost for use of images on forums I have deleted all photobucket accounts. I apologize if you enjoyed or found my photos helpful.

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post #5 of 6 (permalink) Old 07-21-2016, 04:58 PM
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Quote:
Originally Posted by Anastasios Theodosiadis View Post
good question sir, I did have plants within the pots w/ iron wool.

I have not tested my pH out of the tap or 24 hrs later. Plz explain the 24 hour deal with tap water? I did not know it would begin to drop in pH if the water was just sitting there.
The water companies add chemicals and what not that will off gas, chlorine and carbon dioxide for example. Allowing the water to sit for 24 hours allows any off gassing of the sample to occur. This off gassing may explain your ph drop. So what I would recommend to start is test a sample fresh from the tap and one to test 24 hours later. You may even want to test one that has sat for 48 hours.
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post #6 of 6 (permalink) Old 07-21-2016, 05:00 PM Thread Starter
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Quote:
Originally Posted by thedood View Post
The water companies add chemicals and what not that will off gas, chlorine and carbon dioxide for example. Allowing the water to sit for 24 hours allows any off gassing of the sample to occur. This off gassing may explain your ph drop. So what I would recommend to start is test a sample fresh from the tap and one to test 24 hours later. You may even want to test one that has sat for 48 hours.
thank you Dood, will do.

owner: Archer Fish Aquariums, Brooklyn, NY
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