Question 2, water flow and designs for reef tanks

[Johnny Reefer]

Originally Posted by Ruth

...... They basically can be set to control the amount of juice (flow) that the powerhead has as well as have it turn off and on at preset times intervals. .....

Thanx for the reply. Inevitably, I’m still a tad unclear on how these work (or more accurately....what they do, in this case).

So, I took the term “Variable Speed Control” to mean that if this PH (6100) is plugged into the controller, and that controller is programmed, that the PH’s flow rate would fluctuate throughout the day (and night) independent of any further fiddling from the aquarist. Now I’m thinking this assumption is incorrect. Am I now correct to assume that the controller is not programmable, so to speak, and that if I were to want to change the rate of flow of the PH that I would have to adjust the controller each and every time?

Also, other than during feeding times....what is the advantage to having the PH turn off?

I’m wondering if I can justify the cost of a 6100 PH and a 7091 controller when that combo costs just as much as two 6080’s.

Thanx much,

[AndyL]

Calfo manifolds are among the best if you can fit them...


Normally one would use locline to get some nice random flow, but in my case, decided since I had 4 Hydor Flo's kicking around, they'd do just fine (they clip nicely into a 1/2" FPT fitting).

[Johnny Reefer]

Originally Posted by Johnny Reefer

So, I took the term “Variable Speed Control” to mean that if this PH (6100) is plugged into the controller, and that controller is programmed, that the PH’s flow rate would fluctuate throughout the day (and night) independent of any further fiddling from the aquarist. Now I’m thinking this assumption is incorrect. Am I now correct to assume that the controller is not programmable, so to speak, and that if I were to want to change the rate of flow of the PH that I would have to adjust the controller each and every time?

Also, other than during feeding times....what is the advantage to having the PH turn off?

Anyone?

Thanx,

[vanreefer]

Originally Posted by Johnny Reefer

Anyone?

Thanx,

maximum and minimum outputs are adjustable, as well as the time between Example
min-->max-->max-->min, or
min----->max----->min----->max... or anything in between.
This changing in output make more "wavelike" current