(Not intending to start an opinion war, rather to state my observations)
I picked up a used 55 and found 2 Magnum HOT's and another I later identified as an AC 500. Also included was a Whisper2 and a Whisper3. Everything was well coated in scale and took me a while to clean everything up and see what worked and what didn't.
I was pretty amazed at the water flow from the AC filter and since it was missing some parts (media basket and lid) I did not use it. The only thing wrong with the Whispers were they needed new o-rings at the energizer and one needed a new impeller. For $6.00 in parts I gained 2 new filters. One HOT was bad so I scavenged it for parts for the other which turned out to be a very good filter.
Back to the AC500; Talk about water flow - Holy cow does that thing move water!
After seeing all the user comments and other write ups about the AC line of filters, I decided that I wanted to try it on one of my 55's. I bought an AC70. Fearing that water circulation in the tank wouldn't be sufficient I watched the tank like a hawk. Water circulation seems actually improved over the HOT with it's directed water outflow. If anything like the 70, I have no reserves about using the 500 on my 90 nor about the AC filter line. If anything, I am beginning to think them under-rated for quality of water cleaning. As far as reliance on durability, I won't have an opinion for that for quite a while.
I picked
I picked up a used 55 and found 2 Magnum HOT's and another I later identified as an AC 500. Also included was a Whisper2 and a Whisper3. Everything was well coated in scale and took me a while to clean everything up and see what worked and what didn't.
I was pretty amazed at the water flow from the AC filter and since it was missing some parts (media basket and lid) I did not use it. The only thing wrong with the Whispers were they needed new o-rings at the energizer and one needed a new impeller. For $6.00 in parts I gained 2 new filters. One HOT was bad so I scavenged it for parts for the other which turned out to be a very good filter.
Back to the AC500; Talk about water flow - Holy cow does that thing move water!
After seeing all the user comments and other write ups about the AC line of filters, I decided that I wanted to try it on one of my 55's. I bought an AC70. Fearing that water circulation in the tank wouldn't be sufficient I watched the tank like a hawk. Water circulation seems actually improved over the HOT with it's directed water outflow. If anything like the 70, I have no reserves about using the 500 on my 90 nor about the AC filter line. If anything, I am beginning to think them under-rated for quality of water cleaning. As far as reliance on durability, I won't have an opinion for that for quite a while.
I picked
