Growing algae through the screen.

No pics today but 500gramme harvest, attachment to the screen is extremely firm.

 

The lit area is 13 x 7, double sided. I can tell you pretty accurately how much I feed, because I calculated it for a sizing discrepancy I have with the guidelines on the scrubber site. It's just over 3 (Santa Monica Huge Cubes [3 grms]) or 10 metric cubes (1cm x 1cm x1cm). Screen is sized for 5 Huge cubes.

 

Cube size. If you look at the growth I get, compared to the size guidelines, my screen needs to produce almost twice as much to process 5 cubes instead of 3. That doesn't seem feasible to me, on a screen this size. I consider that my screen actually produces double of most screens I've seen, so this would indicate that the 1cm cube guideline is more realistic.

 

This cycle was with UFO LED on the unharvested side

10 days


19 days


Edge (obviously)

 

Still running Bubbles On Screen Scrubber. Another 9 days gone. I am now harvesting the same amount every 9 days (cleaning 1 side at a time) than I was every 14 days (cleaning both sides at once). There is zero die off at the screen and the benefits of having constant filtering are self explanatory. The led UFO is also doing a good job so far;

19 days


9 days

 

Another 10% increase in harvest @ 545 grammes. Running bubbles on the screen to maximise growth and reduce alk consumption for 5 days then turning the bubbles off for the 4 days prior to harvest and allowing the pH to increase with reference to this - http://algaescrubber...e-Precipitation

18 days


9 days