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I will test my N and P. However, I did remove the waterfall scrubbers a few weeks ago for the first attempts at the UAS which was under powered. I'm not sure if that would skew your data or not.

Well not really dual, but I will be installing a UAS in two separate tanks of mine. One is a 40G reef that's almost 2 years old now and was previously using a waterfall scrubber. It has never seen...

Yes, you would double the size if you are 1/2 cube more and keeping it single sided. Remember you will also need to raise the flow if you add horizontal inches, and lighting wattage must increase 1w...

Smitty, that is correct.

Also, regarding whether you've lit your entire screen or not the flow in light covered area still needs to be 35gph per inch otherwise you've weakened the filter by making...

I'm not sure if there's a chart table with this information, but I thought I'd contribute to the community since I was looking for it. According to,...

So is there no more need to double the screen size if it's only lit from one side??

Hmm...tough to say here. I first had an ATS on my smaller tank that was fed directly from a pump and it was loud. The only way I was able to get it to quiet down was by adding an additional upward...

My apologies Floyd, that should have read a "Herbie" overflow...not the BeanAnimal

My question would be, how are you feeding the ATS? Dedicated pump? Overflow drainage?

The reason I ask is b/c when I first built my scrubber, I was feeding from the overflow of my tank using dual...

Are you able to put a 90 deg elbow on the drain of the scrubber? I did that for mine and I no longer have the gurgle sound as it drains. Doesnt do much for the bubbles though.

According to the SM videos I've seen, you should be able to use a toothbrush around week 3. Prior to that, you want to use your fingertips in a "hair shampooing" motion to get the loose dark algae...

Thanks, I'll give the bigger bulbs and reflectors a shot first since I'd have to build a new box to make a bigger scrubber. The box DEFINITELY makes a big difference. I had the original one without...

Update on my tank:

I've moved my ATS to a "containment box" so that I wouldn't have so much salt creep to clean up....

Just wanted to share some updates. This is my 210G when I first constructed the scrubber:

http://i156.photobucket.com/albums/t38/dukeintl/210G%20Aquarium/EX-FH100-CIMG0680copy.jpg

This is the...

Here's a pic of my scrubber on Day 7. Clean it no matter what correct??

http://i156.photobucket.com/albums/t38/dukeintl/40G%20Aquarium/ATS-40Gday7.jpg

FTS
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Wow...I must be starving my fish then. I dont think I've ever fed more than 2 cubes of food in a whole day!! I will go with that guideline then and build my scrubber section with 3/4 pvc. Thank...

Thanks for the quick response.

The 40 has only small detritivores and I've only been feeding a butterknife's edge of food. Should I increase that to like a whole cube?

Also I guess my question...

I just found this site a week or so ago after setting up my second "running" display tank which is 40G. It is to house my smaller non-agressive fish and a reef. I also have a 210G tank with mostly...