I,m having trouble with my tarm. Can,t seem to get it quite right. Been doing lots of reading and you guys are great! Learned alot but...... heres the deal. got 500 gallon storage tank right next to tarm MB-55 (140,000 btu) laddomat to fill tank 1 1/4 close pipe from boiler to tank. Using 1" al-pex pumping 250' to house load. running a circ loop from storage tank to mechanical room where zones pull from there if calling then back. Couple problems though. My laddomat doesn,t seem to want to charge tank very fast.. at least i don;t think so (all day to raise temp 100 degrees) (from 60 to 160) Next my loop to house and back seems to drain my storage too fast. I have a b&g pl-36 pump on it. I know thats alot of pump. Because i changed some pipng and thats what i had. Question is can i regulate this thing down a bit or? Thnks for the help in advance. Tom