2 SEIO 1100's & 2 MJ1200's - 90g 48" L 24"H 18"W -

[ikn0xl]

I am converting to SPS on a 1+ yr aged tank.

I am approximating 1100*2 + 300*2 = 2800 gph/90g = 31.1X turnover rate.

I know its on the low end but I have sand in my tank
200lbs LR and a 30 G sump.

I am worried my fish wont be able to handle it, and my sand will swirl and create very cloudy water...

Currently all I have are tangs :

2 blue hippo
naso
powder blue
yellow tang
purple tang
Koles tang
mandarin
banded goby
lawnmower blenny

 

[MiddletonMark]

IMO, it's almost impossible to have too much flow for reef fish. Compared to what they thrive in on the reef, our water movement is generally mellow in comparison.

Just my take - I'm not big into Tangs but the ones I saw diving didn't seem to have issues with the wave movement that I did.

 

[Froggy]

You shouldn't have an issue with the sand and the fish will be fine. If your sand is established for a year, then it will not blow around as much as a new bed either. If I were you, I would even consider getting the 1500's instead of the 1100's.

On my 75 I have 2 1100's, 2 Maxi jet 1200's and a Mag 9.5 as my return. I have good flow throughout and no problems with the sand bed. The 4 fish I have are not bothered at all by the flow. Kole tang, Maroon clown, Six line wrasse, and a Royal gramma.

 

[twon8]

ive got a 90 same dimensions with sandbed: seio 1500, stream 6000 and a cut nozzle mj1200 plus a slow return. I have a little sand shifting at times but i kind of like how it makes little dunes and i have no sandstorm issues. I am considering upping to the 6100 and hopefully ill have enough to take the 1500 out. It is just big and hard to mount out of view. i may try to hide it first, but it will likely be aimed the same direction as the stream unless i get real creative

 

[ikn0xl]

Wow thanks for your input, I will be using hte SEIO 1100's with 2 maxijets and rio 14 HF on my return and a rio 1700 on another return for a fuge. This plumbing is getting really confusing.

Is $50.00 for the 1100's a good deal, and I would have purchased the 1500's but their out of stock.

 

[Froggy]

ikn0xl, take this for what it is worth but I would rethink using the Rio 1700 pump. That series of Rio pumps 1700, 2100, 2500 etc ( the regular Rio pump from Taam and not the hyper flows ) have had a terrible track record for stopping, overheating and melting the inside and releasing poisons into the tank water. I myself have lost my 75 gallon reef once to a Rio 2500 meltdown. You can search through Reef central and find many others with the same experiences. I would switch that out for another pump if it were me.

I do not have any experience with the hyper flow models by Rio but I think they are made differently and do not have the same problems. I myself still use a Rio product made by Taam and use 2 Rio Seio 1100 pumps in my current 75 and have never had a problem. The Seio pumps can be finicky to restart when shut off but at least I have never heard of a tank meltdown from one.

Again this is just a little heads up from my experiences and research from other users and am just trying to save you a headache down the line.

 

[Froggy]

Oh, $50 is a very good price on the 1100 model