Hi all need a little advice on heating my pool. Lets get the info out there I live in central iowa this year has been a messed up year have had some hot days 90+ but most are in th low 80's with lows around 50-60. I have an intex easyset (Blow up ring) 18' X 48" deep around 5600 gallon. About a month ago got a solor cover for it and just the other day found the oringal cover as well.(have both on). In the hot parts of the day pool temp is around 76 and in the morning after a cool night around 69-72. I can get a used laars lite propane for 200 or a new in box never used laars lite gas for 350. We don't use the pool a lot due to the fact it is cold. Now after looking around on this site was introduced to pool heat pumps don't know what to get now. Need more info let me know.