
Originally Posted by
stormhawk
Those round balls, if they are smaller than the JBL balls, they can be the same porous material as those used in the flowerpots. At times, the LFS people try to sell you things which you have no idea about, and hence become useless when used wrongly or it becomes toxic to your fishes and plants. Be very careful on what you purchase. It is highly likely that the LFS lady was trying to sell you one of those aquatic soils as a fellow forumer has mentioned.
I have used the JBL balls, but have no comments regarding the effects.
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