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accel · 05/21/2018, 11:25 AM

My best guess is the lighting and placement. The instance where it was fully opened is probably getting better lighting (higher PAR) than on the new tank.

They might be both at the sand level but it doesn't mean they are the same PAR levels unless you've measured it.

I have a hammer on the sand level and and also some about 2 to 4 inches off the sand level. The PAR readings I get at the sand is 100 PAR more or less and at 4 inches about 150 PAR (This is from a 2 month tank).. When it was in the 60 PAR section, my hammers were somewhat shy but not as closed as yours (and this was from a 1 month tank).

05/21/2018, 11:25 AM	#20
accel Registered Member Join Date: Mar 2018 Posts: 110	My best guess is the lighting and placement. The instance where it was fully opened is probably getting better lighting (higher PAR) than on the new tank. They might be both at the sand level but it doesn't mean they are the same PAR levels unless you've measured it. I have a hammer on the sand level and and also some about 2 to 4 inches off the sand level. The PAR readings I get at the sand is 100 PAR more or less and at 4 inches about 150 PAR (This is from a 2 month tank).. When it was in the 60 PAR section, my hammers were somewhat shy but not as closed as yours (and this was from a 1 month tank).