Safest power head for SH

The grates on the fish guards that come with the larger koralias are actually smaller than the ones on the nano model (the nano doesnt come with a fish guard because its already small). The nano model actually has larger front openings than the larger ones with the fish guard.

So the larger ones with a fish guard are actually smaller than the nano without one.
 
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No experience with SH but if I tried it, I would probably try a return pump for flow, with a spray bar to spread it.
 
I've used the Koralia Nano's and I've seen one of my horses get his tail into the intake grating...I now use MaxiJets.
 
I've used the MP10 w/ foam, but I wouldn't recommend them. If you don't crank them up past half speed, you MIGHT be OK. I've seen horses get stuck to the foam because the suction was too great when they get too close to them. I had it on reef crest mode at full steam and before I could peel the horse off the vortec, the flow decreased and released the horse, but he wasn't too happy about it.

Otherwise, the horses seemed to love the broad gentle undertow from it. They would often swim in the current like a treadmill (swim into the current, but go nowhere).

Scott
 
I would use the vortech mp20, not much more flow than the mp10 but is much larger so the "suction" wouldn't be nearly as strong.
 
If you use Koralias, is it best to protect them from the intake side? I assume the exit side is safe since they can't get "stuck" to it obviously...
 
koralia nanos is what i use with no problems but my horses are pretty big

That's a good point, when I recommend powerheads I am usually thinking of adults in my mind, not fry or juvies.

IME I have had no issues with the koralia nano's. I do not like the maxijets because there flow is so concentrated, like a fire hose. If you are leary about the intakes of the koralias, the Seio's witht he fish guard are another choice for a large amount of flow that is greatly dispersed. They are a bit bulky though.
 
+1 on it depending on the size/strength of the horse(s). My smaller one has been stuck to the intake of a koralia nano and the smaller SEIOs, as well as getting her tail sucked into the outflow of a SEIO. All of this was the first week I had them, almost four months ago now. I have since pulled all of those and just last week added a Maxijet 600 with the foam on the intake. I have seen both of them right up close to the Maxijet and were able to get away from the intake, no problem. Probably a combination of her being stronger and the PH itself.

I also second the idea of having a stronger return pump (if you have one) and dispersing the flow and/or using a closed loop. Especially if your horses will be on the smallish side.

HTH!!
 
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