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04/25/2006, 11:09 AM
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#1 |
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Registered Member
Join Date: Aug 2005
Location: Boston, MA
Posts: 71
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Water Movement in a 90 tall
Hey Everyone,
I havent really been able to get a straight-shot answer on this. I'm in the process of setting up a 90gal tall tank (36long, 18wide, 32ish tall) and I am planning on going sumpless for now. I am planning on using Seio's to circulate the water, i figure one in each back corner, crossing paths somewhere around the middle of the tank. my question: would two 820's be enough (total of 1640gph), or should I go with two 1100's (2200gph)? Also, if anyone has any other recommendations, please advise  thanks!
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"Only those who dare to fail greatly, can ever achieve greatly. " -RFK Current Tank Info: working on a 90g tall, in the mean time: 29gal full of nuisance algae w/ 10g sump and 5.5 refugium/"time out" tank |
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04/25/2006, 11:52 AM
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#2 |
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Registered Member
Join Date: Jan 2006
Location: valdosta, ga
Posts: 3,707
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Well the reason that you haven't gotten a straight shot answer is b/c there is not one. I personally would opt for the sump in the beginning. But if that was not an option I would maybee go with three of the 820's with one of them in the middle near the bottom of the tank. Remember, you can always add more powerheads.
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400gals of various tanks in the same system. Current Tank Info: 2 175w MH, 2 VH0 Actinics, Lots of Live Rock, tons of copepods, a Fat Mandarin Goby, Niger Trigger, Yellow Tang, Falco Hawkfish, Bi-Color Pseudo, numerous soft, SPS and LPS Corals |
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04/25/2006, 11:54 AM
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#3 |
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Premium Member
 Join Date: Jul 2005
Location: Mobile, AL
Posts: 6,611
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With the seios, it is easy to overestimate what you will need due to the diffused flow patterns. Always get the model above what you will think you need. You can always use the built in rotating cover to reduce the flow, if necessary.
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You've done it now, haven't you? Current Tank Info: 40g breeder patch reef w/ seagrass; 2-250w XM 10K; Vortech MP40wES & MP10wES; BM Curve 7 skimmer; carbon & occasional GFO |
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04/25/2006, 12:10 PM
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#4 |
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Formally registered membe
Join Date: Oct 2003
Location: slightly sw of richmond, va
Posts: 5,920
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i would say at a minimum 1100's, maybe even 1500s
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Anthony Richmond Reef Club "and as things fell apart, nobody paid much attention." Not building a wall but making a brick Current Tank Info: 300g DD display, 60g frag tank |
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04/25/2006, 12:12 PM
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#5 |
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Registered Member
Join Date: Aug 2005
Location: Boston, MA
Posts: 71
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thanks for the advice, I think I will go with the 1100's, giving me a total of 2200gph, or around 24-25x turnover rate. I realize this is somewhat of a "one of a kind" situation, but i guess ideally I'm just looking for amounts of flow people have in their similar sized tanks.
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"Only those who dare to fail greatly, can ever achieve greatly. " -RFK Current Tank Info: working on a 90g tall, in the mean time: 29gal full of nuisance algae w/ 10g sump and 5.5 refugium/"time out" tank |
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04/25/2006, 12:15 PM
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#6 |
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Registered Member
Join Date: Jan 2006
Location: valdosta, ga
Posts: 3,707
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Well just to give you an idea, I have about 2500gph going through my 90gal 4' tank. So the 1100's should put you in that ballpark.
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400gals of various tanks in the same system. Current Tank Info: 2 175w MH, 2 VH0 Actinics, Lots of Live Rock, tons of copepods, a Fat Mandarin Goby, Niger Trigger, Yellow Tang, Falco Hawkfish, Bi-Color Pseudo, numerous soft, SPS and LPS Corals |
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04/25/2006, 12:16 PM
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#7 |
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Premium Member
Join Date: Feb 2004
Location: Dallas, Texas
Posts: 1,314
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More flow is always better than not enough!
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"Anyone who has never made a mistake has never tried anything new." Albert Einstein Current Tank Info: Marineland 150 XH Reef w/ 55 AGA Sump, Oceans Motions Super Squirt, Ecotech Marine Vortech, Current Prime 1/3 hp Chiller, 200 lbs. LR, 175 lbs. LS, 800 watts PFO MH and 440 watts IceCap VHO. Softies, LPS, and Clams! |
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04/25/2006, 12:16 PM
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#8 |
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Premium Member
Join Date: Jul 2005
Location: Mobile, AL
Posts: 6,611
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Well, it depends upon what you want to do. What kind of corals, etc. are you keeping? That is perfect in most situations, but not all. I have 2-1500s in my 75, but I keep sps, etc. in it.
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You've done it now, haven't you? Current Tank Info: 40g breeder patch reef w/ seagrass; 2-250w XM 10K; Vortech MP40wES & MP10wES; BM Curve 7 skimmer; carbon & occasional GFO |
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04/25/2006, 01:06 PM
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#9 |
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Registered Member
Join Date: Aug 2005
Location: Boston, MA
Posts: 71
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I'm going for a mixed reef, so probably softies towards the bottom and some LPS in the middle at first, and then hopefully add SPS up top after everything settles in. I've never kept SPS before, but plan on hopefully being able to in the future with this tank.
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"Only those who dare to fail greatly, can ever achieve greatly. " -RFK Current Tank Info: working on a 90g tall, in the mean time: 29gal full of nuisance algae w/ 10g sump and 5.5 refugium/"time out" tank |
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