Been looking at some water chillers on Amazon, there's a $300 Active Aqua water chiller on there and I was told this is complete garbage and isn't going to get my water temps for a 6 bucket RDWC lower than 70 degrees and will be a complete waste of money. Obviously it won't function as good as one of the $1000+ water chillers, but would it be sufficient for a small setup with about 25 gallons total?