Bad choice in Substrate ??? - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 08-10-2008, 04:44 PM Thread Starter
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Bad choice in Substrate ???

I've got a problem. I didn't have any acid laying around and was out of my KH/GH test kit a while back and I chose a sand from Lowes that looked real good. I set up my tank a few months ago and everything seems fine.
I finally got another GH/KH test kit and checked my water.
GH - 240 ppm
KH - 90 ppm
As you can see the GH is real high by the end of the week when I do a water change.
I tested some of the substrate with some Meratic Acid and it fizzed like crazy.
My tap water is:
GH - 180 ppm
KH - 60 ppm
The plants and fish seem to be doing fine.

Is this going to be a problem?

Thanks
Joetee

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post #2 of 6 (permalink) Old 08-10-2008, 05:30 PM
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might be a problem but most fish can survive high water hard ness, though plajnt might have a harder time. i would still replace it though because i can be a pain later on.

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post #3 of 6 (permalink) Old 08-10-2008, 07:38 PM
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Sounds to me like you got crushed coral, not sand. Plus you're starting with liquid rock tap water... just stick with hardwater fish and plants. If things are going fine, then I'd leave well enough alone. Be careful to acclimate new additions slowly, though.





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post #4 of 6 (permalink) Old 08-10-2008, 08:27 PM
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change it when you can.
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post #5 of 6 (permalink) Old 08-10-2008, 08:54 PM
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When you know you've made a mistake, it's best to just fix it and get it over with than to not fix it and have to constantly battle it. Right now, it sounds like your tank isn't fully stocked with plants and fish. There will never be a better time to switch out the substrate than now. Later, you'll have more fish and plants to disrupt.

Get the right sand, clean it up, put the fish, shrimp and plants in an appropriate holding tank (or bucket), and then use a python to suck out the sand from the tank into a bucket in the sink with a good strainer (may need to refill a few times to get all the sand out). From there, it's not too hard to put the new sand in, add plants, filter (if too much sand is kicked up) and add your fish, plants and all back in AFTER you acclimate them well. You could get a small air pump and air stone if you are concerned about how long the fish are in the holding tank.

Once you're done, you'll be so glad you did it. The hassle of it all will be gone. The sooner you do it, the sooner you can enjoy your tank without worrying about the substrate.

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post #6 of 6 (permalink) Old 08-11-2008, 05:21 AM
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The sand you bought is probably aragonite (CaCO3) based. If you want to use sand use silica based sand.
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