Lol... Tom you're so funny, if you read the first page you can see that he hasn't invested in a dosing pump and now you're suggesting he buys a calcium reactor. Hey Roger, i've been dosing the esv ever since I started with the hobby. But now I'm switching over to the brs stuff myself ($3.75 a gallon when you buy it by the bulk). I guess that many people haven't thought about the energy consumption that another pump is going to require to send water through the reactor (most likely at least 1.5 amps running all day). But anyway, here's a little trick that I've found that works for me when you're using concentrated forms of the 2 part method. Take the one gallon jug and place it in a pot big enough to hold it in, then pour water into it just enough so it doesn't spill over, put in low flame for about half hour. Then presto, for some reason it seems that doing this the alk. is stronger (possibly because it's fully diluted). And still I would recommend you get two dosing pumps from brs (that's if you didn't like the first suggestion pump that I made) this will make it easier for you to monitor your levels. Start at a low level with the pump the gradually increase your dosing, at the same time as you reach your desired points. Then you can do your testing less frequently. Like I've stated before you can pm me anytime, I will gladly help out.