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Old 11-22-2010, 03:49 PM   #81
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Quote:
Originally Posted by ChizerBunoi View Post
This reminds me of aquaponics. So do you end up cleaning it less often in the future or is it still a weekly task? Now that you are scraping it off, it seems time consuming. What if you took a bristle brush to it?
It only takes me 20-25 minutes from the time I walk in the door to the time I walk out to fully clean the screen. So it is by no means time consuming, especially when you consider that there is no need for maintenance of a skimmer or phosphate/GFO reactor, etc, and no need for PWCs to reduce N and P. I dose the necessary supplements, but will probably still do a small PWC every once in a while to clean out the sump and do other maintenance, but it is far less frequent. If this were a FO or FOWLR, PWCs would be completely unnecessary. I have 2 (possibly 3) more coming online in the next few months that fall into this category.

Cleaning is a weekly task at this point, however the improved design I am working on will allow up to 2 weeks between cleanings. That being said, it still should be cleaned weekly, or at least have RO/DI water ran over it in between cleanings (to kill pods in order to prevent algae detachment).

Quote:
Originally Posted by maxst2 View Post
Eventually there will be a thick rough turf - which is more powerful cleaner than what you see above. You'll end up cleaning one side then the other side next time you clean from what I read.
The red turf starts to show up in about a year supposedly, and it is a little tougher to remove. SM removes his with a razor blade. The GHA in this setup is actually the preferred algae to have. The original dump-style ATS used red turf. The modern scrubbers do not have a need for red turf, the GHA does the job extremely well.

Here's the screen today (middle of day 6, will be cleaning tonight)



This is thicker and heavier growth than last week, and a day earlier. The growth is so thick that the water level at the bottom of the ATS box is up to the line where the front cover locks in. This is why I have to re-do my design!
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Old 11-22-2010, 09:52 PM   #82
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Why not have the water just pour over it and not have a bottom? Also, what is that stuff in the bottom of the design? It almost looks like colored gravel.
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Old 11-22-2010, 10:01 PM   #83
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Why not have the water just pour over it and not have a bottom?
that is an option and there are designs exactly like that. The problem is that it is noisy and you get tons of microbubbles (and salt creep) unless your screen is submerged at the bottom. The idea is to have the bottom 1" of screen underwater to eliminate noise and reduce microbubbles.

Also, if you have a screen totally enclosed in an acrylic box, it allows for 3D growth of the algae to the point where most of the algae is submerged, and you get better growth (and no microbubbles)

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Also, what is that stuff in the bottom of the design? It almost looks like colored gravel.
Coralline algae
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Old 11-22-2010, 11:38 PM   #84
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Screen Cleaning #6

End of week 6. Mega growth man!!








25 minutes from start to finish (including clean-up)
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Old 11-23-2010, 09:28 AM   #85
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Wow that is amazing. I hope mine takes off like that soon. How many watts of light do you have on it? I just upgraded mine to about 140 total watts, so it should take off now.
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Old 11-29-2010, 02:02 PM   #86
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2nd Generation DIY Build

I spent some time on CAD working out a revised design, and along with a couple ideas from others on RC I solidified a re-design last week. Over the weekend, my Dad and I built this new 2-piece ATS box that will replace the old one:







It has a frame for holding the lights made out of black acrylic, and the standoffs will be held in place on the outside versus the inside, that way the screw heads are out of the way. It also has a black strip that acts as a light blocker to keep light from getting around the reflectors better. I left the ends open for ventilation, I will probably add fans on one end of each side. The inner box has black on the bottom and sides, also to block light to the sump and outside of the device.

The inner box will house the screen, it is watertight and has holes drilled in the corners that match up with open sections in the base for drain tube connections.



Instead of going with modified (hacksawed) bulkheads like in my original design, I came up with a more compact and flexible design, I used a combination of a male/female screw-on PVC connector (for 1" pipe) and rubber sink faucet o-rings, then used a table router to custom cut the hole so that it tightens down and provides a perfect watertight fit





There are 2 of these, one in each corner of the box. The screen will actually hang down to within 1/2" of the bottom of the box, and since the drain is off to the side and 1" above the bottom, the water will not cascade down and directly into the drain.

My idea here is that this will:

1) reduce or drastically eliminate microbubbles

2) reduce the chance of clogging or the pipe (which has not happened, but other have experienced it)

3) allow option of different heights of internal tubing to control the water level in the box.

Allowing the screen to become completely flooded provides for 3D growth of the algae (like I am seeing at the very bottom of the current design) and having a 2nd drain 1/2 way up the box would allow for buildup of algae and a secondary maximum water level. I considered cutting a slot out of one side of the box as an emergency measure, but that can be added later if it seems to be needed. I don't think it will.

I obviously have to add all the light fixtures and wiring, but should have it up and running in the new box by this weekend.
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Old 11-29-2010, 02:05 PM   #87
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Floyd that is AWESOME
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Old 11-29-2010, 02:47 PM   #88
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Well done. Looks solid dude!
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Old 11-30-2010, 12:51 PM   #89
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Cleaning #6

I cleaned out the sump on Saturday, moved most of the LR in there to the DT, removed the return pump intake foam filter, and stacked the remaining LR around the intake so that I had a place to put the Purigen bags and to also create an area for bubble to get stuck to. It works pretty well. During the cleaning today, I opened the bypass with a pipe extension added, and bubbles were flowing pretty heavily around the sump, but they werent' getting into the DT. I forgot to snap a pic.

During the cleaning, I also fragged some Xenia and Anthelia and got into a conversation with the guy buying them, and the screen was without flow for about an hour. I think it dried out a little too much in a few areas, because there was a little more odor than the last few weeks, and sections of the GHA had turned yellow, strangely enough only on one side of the screen. Anyways, still had excellent growth and the cleaning took 21 minutes from the time I walked in the door to the time I closed the bypass valve after re-installing the screen. Pics:



One half harvest



second half screen




Harvest

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Old 11-30-2010, 02:59 PM   #90
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Think you should make some flow protectors. Its growing to a point where it'll clog your system. Seen them on a few setups so far...
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