The Planted Tank Forum - View Single Post - Cat litter substrate
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Old 10-18-2012, 06:46 AM   #5
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That's an awesome method. The litter falls apart very easily. I'll scrap it and use something else. Generally, oil absorbent materials win over cat litter?

Originally Posted by dmagerl View Post
You need to test whether it will fall apart under water. Just take a small amount and put it in a cup of water and lt it sit for a week. If it turns to mud, dont use it. If it holds it shape and it wont pulverize under finger pressure, its good to go.

I used this technique to add Hi-Dri to my tank. Didnt even wash it.
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