Shake your head all you want lol !!! It's true and anyone who says that it keeps more consistent parameters and salinity compared to daily top offs is a STRIAGHT up liar. The difference between the two processes in a reef under 300 gallons in minuscule enough that you would never know the difference
Plus I have heard a TON of nightmare auto top off stories, I bet you have never read about a guy who manually overflowed his tank lol.
If you don't have an hour or two a day for ANY pet, you should not own that pet
I've tried all day not to reply to this but here goes, my ato does not do water changes, it doesn't feed the fish, it doesn't look at the sump 3-4 times a day, it doesn't call me at work and tell me the temp, PH, my controller does, it hasn't yet once brushed the Dino's off the rocks that I spend an hour vacuuming with a 1/4 hose. I'm not sure what you think an ato does but any help for me to enjoy just looking, watching your animals is nice in my book.
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. If you don't think ATOs are a sign of laziness, then we can agree to disagree
Practice makes perfect darlin

