Some of the reviews in the PurelyH20 sponsor forum complain abut bad customer service, but I haven't had a lick of a problem. They even called me on a sunday aftern I bought it to make sure everything went alright. Their store is on South Nova Rd, next to a LFS. It takes abour 3-4 days for them to make your unit, if you would like number, look under the thread local pickup in the purelyh20 sponsor forum.
Also the cheap unit at aquatics eco is sitting on the counter there, may need to call and ask them the specifics on it. It was like a 50g per day for 59$.