I have a open siphon overflow from when I first started my tank and didnt know any better but I still use it on my 90g everything thats been said about them is true. But it works well if kept clean. I clean my intake box out monthly of the alage build up. When I built my sump/fuge i built it big enought to be able to handle the water that would come out of my dt into the sump in the event of a power outage so I've never had a flood. When the power comes back on my pump takes about 30 seconds to have my tank full again and flowing back to normal.Open overflows!!!! Light is not picky where it points and will illuminate a thing in its path. The right spectrum (the ones we reef with) WILL cause mass algae to grow. Over time our overflows get disgusting!!! Ahh and another one coming:
Siphon overflows. Boy do those things cause issues. Most require an aqualifter to be partially reliable. Snails can flood them, fish can get stuck in the pipes...and during power outages these can lose siphon and without a reliable pump will not kick back on. Thanks for the mess! Next:
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