View Full Version : Any use for these?

12/29/2015, 12:19 AM
I was digging through my freshwater supplies trying to figure out what I could repurpose and I came across some shrimp supplements that increase hardness. Any use for these in a reef tank or should I get rid of them?


12/29/2015, 04:19 AM
A ph of 6.4 will be a issue with salt water tank.

12/29/2015, 08:13 AM
Check for an expiration date on that as well.

Member No. 1
12/29/2015, 08:34 AM
That stuff looks old, is meant for freshwater, and who knows whats in it.

Is it really worth taking a chance with your tank?

If you need to raise Alk cheaply, you can use Arm & Hammer baking soda. (NOT BAKING POWDER) Here is a good read for you explaining how. http://reefkeeping.com/issues/2006-02/rhf/index.php#6

12/29/2015, 11:42 AM
I looked for expiration dates but didn't see any. It's not that old if I remember right. The black stuff is just some carbon that was being kept in the same box that got all over everything.

Good enough. Just wanted to be sure it wasn't useful before getting rid of it. :)

Thanks for the link about how to raise alkalinity properly. It was good reading!

Member No. 1
12/29/2015, 11:55 AM
Your welcome!

12/29/2015, 08:52 PM
I agree that the minerals are for a freshwater tank. I'd skip them.