I think any power head will do the same thing. They can�t stand pressure.
Marco
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Lunes, 22 de Octubre de 2001 01:03 p.m.
To: [EMAIL PROTECTED]
Subject: Re: RIO Powerhead

I've used a Mag 7 on a Berlin skimmer and never had a problem.  I also use a Mag 12 on water changes (RO back to tank) and works good.  How much head pressuse do you have?  Mags, IME, don't like head pressure.  Seriously cuts back output.   FWIW,
Rick

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