<a href=showthread.php?s=&postid=15696608#post15696608 target=_blank>Originally posted</a> by sean_954
Nice work !!!
Thank you!
<a href=showthread.php?s=&postid=15714342#post15714342 target=_blank>Originally posted</a> by stealle
... Do you dose your three solutions at the same time slowly around the clock or do you dose each solution at different times?
Rather than trying to reinvent the wheel, if you don't mind, I'll just answer your question with some things I wrote a while ago:
As for my system, here are the formulas I use:
Alk - 4 cups (32oz) sodium hydrogen carbonate in 2gals RO/DI water.
Ca - 4 cups (32oz) calcium chloride dihydrate in 2gals RO/DI water.
Mg - 1.6 cups (12.8oz) magnesium chloride hexahydrate and 1 cup (8oz) magnesium sulfate heptahydrate in 2gals RO/DI water.
I started dosing at a rate of .4mL per gallon of EACH solution per day. As my frag and fuge tanks are not yet on-line that means .4 X 330gals = 132mL of each solution per day.
Right now each of my three dosers is on for 10 minutes at a time 8 times a day. One quickly gets to the point where their params are totally stable.
It's not a good idea to dose the supplements simultaneously (especially Ca and Alk) due to the probability of precipitation, so I set the timer's up in a staggered fashion. Each supplement is set up to be dosed 8 times a day for 10 minutes. That makes 80 minutes X 1.6mL = 128mL - very close to the 130mL I was shooting for.
The Alk is dosed at 12:00, 03:00, 06:00, 09:00 - both A.M. and P.M.
The Ca is dosed at 01:00, 0400, 07:00, 10:00 - both A.M. and P.M.
The Alk is dosed at 02:00, 05:00, 08:00, 11:00 - both A.M. and P.M.
You can see that the doses are staggered one hour apart and no two supplements are dosed at one time.