Planted Tank Enthusiast
Join Date: Dec 2016
Location: CT River Valley, CT, USA
How thick can I make a lava rock substrate?
Iím planning out my new tank, and Iíll be using a pretty coarse layer of lava rock granules as the base layer in the substrate(.500-.750" pieces). The reasoning for this is to add more surface area for biological filtration, and to add height without having an anaerobic layer. My question is thisÖ How thick can I reasonably go before I risk anaerobic respiration at the bottom? In case itís important, this is going in a 125G tank, and I would really like places with the substrate 10-12Ē thick (7-9Ē of lava rock + 3Ē of BDBS). Will this work out fine, or am I asking for trouble here?
If you ever think you're too small to make a difference, spend a couple of nights sleeping with a mosquito.
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