I had the same issue years ago. I bought like 3 Herpstat 1 and 2 Herpstat 2. Then when the Herpstat 6 came out, i sold off all my Herpstats except for my Herpstat 1 redline and bought 2 Herpstat 6. My advice is get the biggest one you can afford. I never had a problem with even my old Herpstats. If for some reason, something goes funky and you have to send it in, you can just buy a couple jump starts and daisy chain them for a week. I have 3 Jump starts laying around which i use for quarantine tanks anyways.
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They are awesome, I run 2 of them and a Herpstat 1 Redline![]()