shutting a system down at night

First image: Here is what happens to oxygen content on a reef at night. Notice the sudden increase in oxygen from 400-1200 (8 hours) and the sudden decrease from 1200 to 2000 ( 8 hours).

Second image: Changes in, TA= Total Alkalinity, TIC=Total Inorganic Carbon (carbonate, bicarbonate etc.), DO= Dissolved oxygen over a 24, 48 and 72 hour period.

 

He/she would need two heaters. You put one in the sump and one in the direct tank. Both of the heaters need to be calibrated to the same temperature so that when the sump is turned back on in the morning, the water flowing back into the system will be the same temperature and won't result in a "shock".

 

Are you peeps using low noise standpipes (Durso, Stockman, etc)?

You can shut the skimmer off, but I wouldn't shut off the flow to the tank off. You stand a good chance of smothering it. Better yet, DIY a muffler for the skimmer...they're easy to make.

 

thats actually what Im in the proess of doing Hofer Gurgle Buster Construction I really hope this works!!