Hi all,
I have a 100 litre loft tank of which is being controlled by SMS messaging (filling, emptying, mixing, various nutrient doses etc) which is for a hydroponics system.
I want to be able to connect this to 2 x secondary tanks of which are 310 litre water butts...see an explanation here as to what I would like to connect to.
http://www.youtube.com/watch?v=d5822dpt7FA&feature=player_embedded
It is easy enough to put a float switch in the secondary tanks of which will be active at certain times of the day (when its not emptying or filling so its a true level reading) of which will engage a pump in the main control tank and top them up.
The problem I have is the main tank has conductivity and PH probes in it and the PH auto adjusts once it hits 5.9, pushes in PH down, mixes at the same time then turns off when it hits 5.7. I need the mix in the main tank and the 2 x secondary tanks to recirculate so the readings the probes are detecting are the same. I am not sure how I can get the balance right so that the tanks all pull and push the same amount of water from each other at the same time so it circulates properly i.e if one of the secondary tanks pushes harder the main tank will overflow (I could use a ball valve of course) but this will stop it from circulating properly
I have a 100 litre loft tank of which is being controlled by SMS messaging (filling, emptying, mixing, various nutrient doses etc) which is for a hydroponics system.
I want to be able to connect this to 2 x secondary tanks of which are 310 litre water butts...see an explanation here as to what I would like to connect to.
http://www.youtube.com/watch?v=d5822dpt7FA&feature=player_embedded
It is easy enough to put a float switch in the secondary tanks of which will be active at certain times of the day (when its not emptying or filling so its a true level reading) of which will engage a pump in the main control tank and top them up.
The problem I have is the main tank has conductivity and PH probes in it and the PH auto adjusts once it hits 5.9, pushes in PH down, mixes at the same time then turns off when it hits 5.7. I need the mix in the main tank and the 2 x secondary tanks to recirculate so the readings the probes are detecting are the same. I am not sure how I can get the balance right so that the tanks all pull and push the same amount of water from each other at the same time so it circulates properly i.e if one of the secondary tanks pushes harder the main tank will overflow (I could use a ball valve of course) but this will stop it from circulating properly