is this too much flow?

[evilsike]

tank is 46g. mixed reef. thinking of getting sps half or higher of the tank when I get new lights (still have PC 2x96). xenia, gorgonian and other beginner corals are currently in there.

I currently have 2 seio 620 with mag7 return pump through a SCWD for my circulation.

I want to change the mag7 (return)for a mag5. My skimmer is using the mag5 but want to switch them (mag7 will be used on AquaC120)

now. I want to get rid of the 2 seio for a lower profile of close loop. I have mag12 (110watts)laying around and another SCWD. is this too powerful? maybe use 1" pvc with this?

or buy another mag7 (70watts)for close loop. would this be comparable to my 2 seio?

btw, SCWD will be modified for better flow.

here's a top view photo of what I have in mind...


thanx in advance
it's much appreciated

 

[thatguy]

I have never seen anyone on RC use the term 'too much flow'.

If you put 2 mag 12's in a 1 gallon bucket, someone would say it isn't enough flow.

What are you going to keep?

 

[joeycadre]

i have a mag 9 return and a mag 12 CL on a 45 gallon. and i threw in a seio 820 for more flow. it's an SPS tank though.

 

[Mr31415]

Well I am one of those thinking it is easy to have too much flow. I have two Tunze Streams in my 145g tank, I think the 6100's. If I set them to 50% of their power they are so strong they cause all the soft corals to completely retract their polyps, sand storms everywhere and the fish cannot swim.

So yes I really do believe it is trivial to have too much flow. The ocean has currents and lots of different kinds of flow, but on a reef when a storm comes (read: too much flow), it severely damages the reef.

 

[Tang Salad]

Many LPSs do not handle too much flow very well.

The 'Never have too much flow' maxim refers to SPS tanks.

 

[evilsike]

I like the calm effect that the lps and soft colors give me but at the same time, I like the colors of acro's and other sps. I want to have the best of both worlds without breaking the bank.

I may just try the mag12 this weekend but with 2 SCWD.

The thing I like with the PVC is, it's cheap and with the 45 and 90 degrees you can put in a tee, you can angle it however you want and still seem low profile.

thanx for the input guys.

btw. so with this info mag12 still be too much?

 

[RichConley]

<a href=showthread.php?s=&postid=8442127#post8442127 target=_blank>Originally posted</a> by Tang Salad
Many LPSs do not handle too much flow very well.

The 'Never have too much flow' maxim refers to SPS tanks.

I've got over 100x turnover, my LPS dont seem to care.


As to this, 2x620 to a mag12 will be a huge dropoff in flow, especially if you're running less than 2" for the CL plumbing.

 

[RichConley]

<a href=showthread.php?s=&postid=8442127#post8442127 target=_blank>Originally posted</a> by Tang Salad
Many LPSs do not handle too much flow very well.

The 'Never have too much flow' maxim refers to SPS tanks.

I've got over 100x turnover, my LPS dont seem to care.


As to this, 2x620 to a mag12 will be a huge dropoff in flow, especially if you're running less than 2" for the CL plumbing.


With SCWDS, you'll be lucky if you get 400gph out of that pump.

 

[evilsike]

so you mean to say the 2 620 I currently have are much powerful than the mag12?

I'm just curious since seio have a different gph than everybody else. I don't know how is it calculated

 

[Wiskey]

If you put 2 mag 12's in a 1 gallon bucket, someone would say it isn't enough flow.

Your right, but that would almost be good enough, I mean you might be able to get by.

I think you would be better served to upgrade your Seio's to 820's. The Mag pump is bad on a closed loop because they tend to leak, plus the Squid is going to sinch that sucker down to about 400 GPH, you have much more flow now then you would after installing your CL.

Whiskey