my guess would be a GFO reactorsslak,
What does the smaller pump (the one with flexible hose) in your return area supply?
my guess would be a GFO reactor
...the gate valve caught my eye :rollface:Good guess! It's for a Two Little Fishies GFO reactor.
i still don't understand why people buy hang on skimmers for a sump...
Here's mine, it doesn't have that "aged" sump look to it since it was just set up a couple of weeks ago.
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