Ongoing scrubber issues

[kotlec]

Makes sence. But how to fix that ?

[Floyd R Turbo]

I am starting to wonder if the Alk / Bicarb uptake is related to size of screen, or more appropriately, the over-sizing of a screen. I went from a system that ran a 14x7 screen fed 2 cubes/day to one 4x6 and 1) evap rate dropped from 1.3-1.5g/day to <1g/day and I dose the same amount of alk in the top off water. Alk is now in line with Cal uptake, roughly. Also switched to LEDs and am growing only green algae, instead of yellow goo and smelly brown slime.

[Garf]

Are you saying the bigger the screen, the less ALK consumption ? Or the other way around ?

[kerry]

A smaller screen or less algae would take up less alk. I have thought about cutting down the screen in my 40G waterfall to see if there is a difference in alk. I dose a gallon a day and my Ca raises much faster then my alk. I thought I might get some critters that use a lot of Ca or cut down my screen.

[kotlec]

Kerry is that screen nice green ?

[WannaRace]

Just an FYI: tested my Ph run off from the screen and it measures exactly the same as my tank water.

[kotlec]

Thats what I suspected. Flow over screen is too high to allow ph be altered. It could only be long term ph change at best.

[WannaRace]

I dont know what any of these findings mean but I'm getting very impatient First thing I am going to do is try to stabilize my parameters before I make big changes

[WannaRace]

Bottom of 3rd page shows a full tank shot just 2 months ago. Look at that growth!
Almost coming up out of the water! What to do when that happens?

[Garf]

Very nice