Hello everyone,

i need help to setup a set of steps to perform a water change without sensor if even possible.

At the moment i have setup my maxi doser 2.2 to remove and add at the same time 175ml every hour, quite a simple process based on the timing and its working well.
however, i would like to implement a fonction that allow me to do a bigger water change.

here the logic i have in mind and would like to implent:

1- Switch off socket 2, 3 and 5 which are my return pump, skimmer and ATO
2- activate my pump number 5 to remove X number of ml of old water
3- once finished, Run pump number 5 to add the same X number of new water into the tank
4- when completed, switch back on socket 2, 3 and 5
5- Done, happy fish and care taker

for the moment i am going to do it manually using the maintenance fonction and then dose both amount one after another, but i am sure there is clever way to do it

Many thanks for you help.
cheers,

petit reef