How long does your co2 last?

[Son Of Skyline]

I haven't checked for regulator leaks but i'll do that asap. It's an old regulator i bought off a fellow canreefer. I suspected a leak but thought i'd check with you guys first. Looks like i'm not too far out of range, but it still seems like this tank should have lasted alot longer than 3 months.

[sphelps]

I use to get about a year out of my 10lb when I had it, then I switched to 5lb to save space which for some reason would only last about 2 months. No leaks, same tank, same reactor.

So I would definitely you're going through it too quickly and something isn't working properly but I assumed the same when I switched but couldn't find a problem. So.....