[Ghost]

Originally Posted by cvrle1

I am guessing to save space inside the sump, so there is more room for other things.

OP, For tank that size, and sump, HOB skimmer wont be good enough. HOB skimmer may be good for 30-40G tanks, but anything over that they dont do good job at all.

Correct. I was hoping to keep more space in the sump for other filtration (rubble and macro algae).

But I read that the octopus 100 was designed to handle tanks over 100g. Lfs had recommended it too. Hope it works otherwise I'll switch. Again, appreciate the input. I've got a lot of reading to get caught up to refresh.

Another question for anyone still following; is 1.4lbs of sand per gallon and 2lbs of live rock per gallon too much substrate? Local store said that more than 1.5" of sand will cause problems down the road