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Hey SM, What is currently used for the grabber? I think I read it is crushed quartz? I'm thinking to make with 2-5mm course crushed quartz. I'm also thinking to make with crushed glass which is a...

What would be the difference be between a 3 day blackout that people sometimes do to rid GHA in the tank vs (essentially) a 3 day blackout within the scrubber?

How does the water...

Hi SM,

I'm considering to tee with check valve to my current air line, a battery powered air pump (the one that has a plug which is used to detect power failure).

Focusing on the scrubber...

Hi SM,

I've siliconed my scrubber like you suggest in the manual. I siliconed the outside tray, waited for it to dry 24 hours. It always seem to stick too well to the glass and have a hard time...

Thanks for the reply!

I think the Hydrofarm is great. It has a quad outlet so use tee adapters to make 2 air lines with check valves. These 2 lines now have a potential to push out 7.5LPM if...

Hi SM,

With your help, I’ve now built 2 UAS scrubbers equivalent to the HOG1xs with the goal of going skimmerless; both on for 18 hours a day. My bioload and feeding is very light and as a result...

Hi SM,

Using the HOG 1x with 1" deep trays to compare, my dinner trays are approximately 6"x4.5" and 2" deep each. With my 4-3W LEDs attached to the outside tray and the plastic canvas attached to...

Hi SM.

At the moment, my 1 inch apart cross slits (as you would do) on my tubing are letting out bubbles. Though I wouldn't be surprised if later on I looked and one of the slits have moved and...

If you were to cover half, which half would it be; top, bottom, or side? I just want to do what you would do in my case. Thanks.

What is a good substitute for the black cloth that is sent with a HOG 1x to dim LEDs?

I am concerned that the piece of a white cotton t-shirt for 4-3W LEDs approximately 3-4" from the screen may...

pyrocide also thought it looked like "thick yellow slime" in the center in his first post, as I also thought. Sorry, just clearing my my thought process; yellow means too much light/ dark green means...

SM...disregard my question above...just found an older reply you gave to an older thread with a near similar issue..."On an upflow scrubber, some types of yellow means it needs more light. This would...

SM...I'm confused by this. Researching this forum, I'm seeing that yellow in the middle means light is too strong so the solution would be to either turn down light intensity (turn down, cover with...

Thanks. How many holes on the bottom? Sides and top?

Thanks for the concern. I do currently have this on a current mock up using ceramic magnets and it holds up ok. See the new pics I just...

I plan to DIY an Upflow Algae Scrubber (UAS). My question is regarding the inside shell. What is the size (or sizes) of the hole (eg. 1/8” or 1/4”) and how many of these holes to make on the bottom,...