Reef nutrition

Gyre XF330 in a reefer 350

Jonathan Chia

Supporting Member
The xf330 has a max glass thickness of .5", but I believe the reefer 350 is at 5/8"

Would the magnet still work? Or would there be a way to use a stronger magnet? I would get a xf350 but think there might be too much flow


Supporting Member
Why do you think it will be too much flow? You could always turn it down (at least to its lowest setting).
Well. .5" < 5/8" so I'd say no it won't work, they usually over estimate thickness too so like it will just barely work on half inch.

They might sell a magnet upgrade kit, or you could use stronger magnets on the outside, but you might end up spending more on magnets than the cost of a xf350. you can always dial down the xf350
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Supporting Member
I have an XF 280 I run on 3/4” glass and another I ran on 3/4” acrylic. Both do well, but they are rated for 1 1/4” walls
I tried running an XF150 (same 3/4” rating as a 250) on 3/4” glass and it kept falling off unless I wedged it against something else. There was a magnet upgrade kit for a while but it was something silly like $100 last I saw one, so it was worth getting the bigger model.

In short, get the 350 and turn it down if needed. You could also always put on a couple extra of the nem guards they come with to cut the flow down.

Oakland Evan

Supporting Member
I run 2x 250's on my 210 gallon (at about 60% max) and love them, upgraded from the 230's and my corals are much happier.


Supporting Member
I used to run an 180 (might have been a 210, either way 72"x24") SPS tank with a pair of 250s that did very well. The 230 in my 170 on the other hand (60"x24") is about useless. I've seen them do nicely in 50ish gallon cubes.