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178 Posts
Discussion Starter · #1 ·
Hi Friends !

Just wanted to request for one more guidance...I'm going to sprinkle this substrate (Red Sea Reef Base - above the 'half inch sand layer' (which is inturn above an inch of normal black gravel (about 3 to 5 mm gravel size) - Just wanted to know if there is any way to make sure that the larger gravel stays at the bottom forever and this subtrate remains as the top layer - Kindly guide me a little...

Thanks a lot !
Regards and Care
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