will RCS survive tannins?

[nature]

wood in my aquarium still make water yellow, so will my RCS ok?

[DerekFF]

Yes

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[cprash]

It's generally good for them, unless you've greatly altered the pH or any drastic changes.

[Hmoobthor]

tanning is good!

[nature]

thanks,i hope the pH is suitable for them.getting RCS tomorrow

[cprash]

Originally Posted by nature

thanks,i hope the pH is suitable for them.getting RCS tomorrow

try to test the pH if you can, keeping it stable will prevent deaths in the first couple of weeks.

[Kunsthure]

What is your pH, GH and KH right now? I'm suspecting the pH might be pretty low if you've got yellow water. I have a new piece of DW that's dropping my pH from 7.8 to 7.2 but only because my GH is 6 and KH is 2. When I had a GH of 4 and KH of 0-1, the DW dropped my pH to 6.6 from the 7.8. And I boiled the hell out of mine for three days straight and have no yellow water.

-Lisa

[nature]

dont have the kit to test,hard to find here.the fine sand that cover the substrate should increase the pH right?

[mmccarthy781]

Originally Posted by nature

dont have the kit to test,hard to find here.the fine sand that cover the substrate should increase the pH right?

It depends on what the sand is made of, most of the time sand is inert so it won't effect the pH. I have seen some brands of aquarium sand that are made of aragonite which will buffer.

[cprash]

Originally Posted by nature

dont have the kit to test,hard to find here.the fine sand that cover the substrate should increase the pH right?

strong maybe. If it is inert, then no. What did the packaging say?

[nature]

just ordinary sand,so dont have any information.in that case i will add a few seashell or adding bioball in the pump filter

[Kunsthure]

Originally Posted by nature

just ordinary sand,so dont have any information.in that case i will add a few seashell or adding bioball in the pump filter

Don't go monkeying around until you know what your params are. Try Amazon for test kits if you can find them locally. You'd probably need to go to the mom & pop LFS to get the kits, I've never seen KH and GH at Petsmart/Co. Make sure to pick up the high range pH test as well as the regular pH kit.

Is your tank fully cycled, btw?

Edit: Oops, now I see that you're in Malaysia and that will complicate things a lot. I don't know if Amazon will ship there. You might want to look at eBay for the kits. There are a LOT of Asia-based sellers of aquarium stuff on there.

-Lis

[nature]

i know, but the kits usually sell only at large store.already put a few seashell to balance the acid

[Kunsthure]

Originally Posted by nature

i know, but the kits usually sell only at large store.already put a few seashell to balance the acid

You *really* need to know your parameters before you start trying to change them. You could have really hard water, keeping your pH high and adding seashells will only make the water harder and possibly raise the pH more. If the water is too hard, shrimp won't thrive.

I know test kits are expensive but it's for the health and happiness of your shrimp to know what you're dealing with.

-Lisa