NCPARS reef tank turnover rates

[psusocr]

Hi all,

Just wondering what you guys have for turnover in your tank? I was running two mp40's and 4 tunze 6055 at about 60%, i took the mp40's out for some maintenance and cranked my tunze's up on the controller to 100% and it looks like im getting the same nice coverage with better random flow covering my whole tank no dead spots. it equals out to about 30X turnover but this "seems" low from SPS reccomendations. with the two mp 40's i have about 52x turnover.

Thoughts on this?

Im starting to think my mp40's are overrated and may go with bigger tunze's

 

[insanefishguy]

I have never actually tried to figure my turnover out, but here goes...

2 maxi mods:4000gph
2 korallia 4s (controllable on wavemaker): up to 2746gph
Mag 9.5 closed loop: 950gph
Mag 18 return pump (between 9 and 10th head):850gph

By my calculations(which may be wrong) I guess I theoretically would have about 68times turnover if the korallias were both on full blast but they alternate dipping down to around half

 

[insanefishguy]

I would guess I am more realistically around 60xs turover

 

[tnyr5]

with all pumps running full bore, I can hit 82x turnover

 

[rogersb]

2 mp10 - 2x1500
1 koralia 1 - 400
mag 5 return - 500
75g tank, so about 50x turnover. My sps are doing well.

 

[Fizz71]

Oddly enough my turnover is only about 15x because I basically use 1x3,250 gph pump to create a circular "drift" type current in my tank. I tried a second pump but I couldn't keep the sand down! Turnover's a touchy thing because pump ratings are really only so accurate.

 

[PAStreetGlide]

After talking with Brad, my turn over is about 30x. So with that said, anyone have an extra powerhead laying around that they want to sell? Something around 1650 gph?

 

[tnyr5]

Interesting Kevin, do you have any plans to put in something along the lines of an Ocean Montion 2 way to switch the flow of the gyre?

 

[Fizz71]

Interesting Kevin, do you have any plans to put in something along the lines of an Ocean Montion 2 way to switch the flow of the gyre?

I have an RKL..which right now is only in the basement. At some point I'd like to add a module to the living room and put multiple PHs on there since my Koralias are OK with switching. The problem is that the current is active right at the sand and piles it up in certain spots and inside the rock work...turning the flow the other way causes a MAJOR sand storm. I tried it manually for a few days and it was a mess. The tank is a little older now so the sand is heavier with bacteria so I might be able to pull it off, but I'll wait until I get the next RKL module.

I also need to get a new prop for my second pump, it's much noisier than the other and it's the same model! I've yet to find a place that sells them, I have to deal with the mfg and even they didn't have a way to buy one...although they sent me a free one for the one that broke.

A switching gyre was my plan 2 years ago when I envisioned this setup, since it's an 8ft peninsula tank and I really want the PHs at one end. But the execution with the sand I have/had just hasn't worked out...and I just don't like the look of a bare bottom.