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sailor, do the words mach II '68-69, mean anything to you?
I had a 69 Mach 1... Does that count?
you mean the fast boats. I retired from the Navy in 2005No, well it counts, but not this time. It refers to his avatar, and it has special meaning.
you mean the fast boats. I retired from the Navy in 2005
sorry, I didn't join until 1984 and retired from a brown water unit.Jim, I was on those, the Mach II version in '68-69 in Nam. That was why I wanted to see if the words meant anything.
I have already taken most of the sand out so I might just take the rest out and go bare bottom. If I were to replace the old rock with new I could stick some of the old rock into the sump to help out with the bio filter.
This tank was set up a long time ago when the norm was 2 lbs of rock per gallon with all the flow you could muster. I had a deep sand bed ( 8 inches) in the sump and very few hard corals. Some of this rock is so old it was collected off Fla when it was still legal to do so.


