Both style regulators work the same. I’ve just got used to using the pediatrics in the 1/32 measurements. I’ve used the others tho. The flow rates on the pediatric are lower than the regular ones. I just bought 3 new pediatrics on Amazon for 69.00 delivered. The seals in them do wear out causing them to leak your oxygen out really quickly. I bang mine around in the truck and boat a lot also which isn’t really good for em. I always dip mine in the water to check for leaks (also not good for them). Make sure you buy some spare seal gaskets. They need replacing every other bottle or MAYBE 3. If by chance you know someone using medical oxygen, they can save you their extra seal gaskets. They are usually the gray plastic ones. I use the brass/rubber ones.
One more thing. USE A CERAMIC OXYGEN DIFFUSER, not an air stone. The ceramic diffusers cause back pressure on the bottle using 1/10th less oxygen that an air stone uses plus the bubbles are much smaller allowing the water to absorb much more oxygen. Used two or three days a week, I can get a month or so out of a D bottle if there aren’t any leaks. Running 24/7 when I haul my own bait to a tourney, an E bottle will last about a week, but I also have a 110v medical oxygen machine for when I get to where I’m going.
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