Search:

120x3w Cree XP-E (CW 50:50 RB)

CW @ 1A
RB @ 750mA

Run 4-6 hours @peak on Profilux (100%) and rest increase/decrease 2-4hours

For now it seems I stand corrected.

The algae and issues I had slightly improved when changing over to the skimmer/pellet, however:

1. This is not due to the fact that the scrubber didn't do...

Scrubbers can not be undersized as such, nor oversized, only in relation to feeding/nutrients.

The alk consume will increase dramatically, from own experience. Algae will let trace elements be...

No, I can't, but I had the same thing. Algae growth distributed in sand and on rocks, large scrubber standalone filtration overfimensioned, no nutrients detectable. First my softies died, then the...

If you are experiencing this, and softies and lps starts to be affected in a few weeks, beware. You will have 2 options. Increase feeding drastically or change filtration. Either way you will have...

[/quote]

Yep, that is true, and if you find a viable solution I'm willing to set it up again. It's not a "scrubber don't work post; it's a "My tank does not work with scrubber even if the...

The thing that gets me every time I hear that argument is this:

- In a skimmed tank (And I've personally seen lots and lots of short skimmer/pellet cycled tanks with good growth and very little...

Yes, but what is the origin? I feed slow, and have had the system first for almost a year, and then again for a few months with cycled water and stone.

Really? As far as I can tell, my scrubber is...

There was at no point slow or little growth on the screens, hence the nutrients had to be "high" while undetectable on a kit. I didn't feed alot, but had steady growth in tank and on screen.
...

And the algae growing on the rocks, glass and all over the place?

Cost is fairly unrelevant to the point where it is working; bang for buck. Maintaining a 6x39w T5HO swap 4 times a year (atleast) and using GAC is not cheaper. In Norway, even vodka dosing is...

Do you also intend to apply this undersizing to my system while I now a few weeks with massive skimmer and pellets have about 1-2mm daily growth on my sps, especially montipora, and almost 0 alga...

No, I'm thinking of an unbalanced min maxing situation where for instance bacteria was suffering or something different. The scrubber itself did an amazing job at keeping N & P at undetectable...

About 1 month after I took the scrubber down completly, running biopellets, gac (very little in a fluidized reactor), and a massivly oversized skimmer (Bubbleking Supermarin 300), my tank is taking...

I agree Santa, that I overscrub, and that Algae are the natural way. There is no question about this.

I have also spoken to Adey, Julian and several other "bigshots" and they all conclude that...

It'd built to tackle 240G stand alone (as of SMs old specs). My system is 190G at best.

If a skimmed tank with measurable p and n has no film on glass for a week, how the heck can I have them without any measurable anything at all with several different tests?

You have to agree,...

My scrubber is built to be very high power, a 240 gallon stand alone filtration unit, but I only have a 170g understocked with not very much feeding.

Problem having such a large scrubber is that I...

Removed 50% (1 of 2 screen) of the scrubber, and voila. Windows stay clean. The whole tank looks overall better, corals included..

There might be a problem with DOC. I asked once if it was...

Quality build, just as expected!

Hope it works good for you.

Thats quite costly if you have 6x 39w T5HO to swap every 2 months. In such case alternatives like GFO GAC and BP would be far cheaper.

A week ago, and amminos, but not by alot. This weeks cleaning was amazing. Alot more, and I usually have solid harvests

http://www.youtube.com/watch?v=Ddtk3vHb ... ata_player

Still no sps growth :(

That would be carbonic acid in the fertilizer dropping it.

(which is part of another ongoing discussion on the forums atm)

ammonia/ammonium changes form relative to the pH of the water (and temp). High pH gives more toxic ammonia (If I didn't change them around), but they are come from "the same" source. (and you always...

Algae prefers ammonia as a source for Nitrogen

So it's either too efficient with skimmer+gac or too weak. My screen is 2x 85x25cm fed with 5500 lph and 234w (t5 39wx6). I feed mby 5 pinches flak and 1-2 cube of frozen. Then your estimates must be...

And if algae bloom and stn sets in due to removal of them?

So, remove gac and skimmer again?

Simply saying they can be removed.

Thanks Jnad, will try it!

It's this. You are removing what little particle food (skimmer) and dissolved food (GAC) you do have, that is needed for growth. Since you have no nutrient/algae problems, you can be pumping in much...

In other words, I should leave it for 7 days?

I have never measured N or P on this tank. Not even the slightest detection on my kits, and I've tried several. I might go the Biopellet/skimmer...

It does seem this is more viable since there has been the last week 0 zero algae growth on the rocks, and the glass looks more like a slime layer than algae layer. I currently clean the screen every...

And the glass? I'm about to give up on this after a year of trying. Might be my scrubber is not strong enough, but then I would not be able to make a stronger one. Can't feed more as that would give...

I still get growth on my glass every 2-3 days. I have unmeasurable N & P for a long time. The display is now clean, and mostly my SPS are happy after I restarted. There is a tiny patch of very short...

O3

If the water has yellowing or tinting, yes.

No, as little as possible, preferably no sump at all.

This is a fairly interesting read. SM, got any nice papers on TOC and Coral's ?

Are you sure you don't mean POC as that's basically what corals and filter feeders eat, while DOC is what is left and accumulated in the water as there is few organisms bar bacteria who consume DOC?...

If your Glass was fine Prior to that, sure, but it still might be an increase in TOC.

Salifert produces a non precise kit for measuring TOC in the water. It's far from a thousand bucks, and does...

Which in terms point out too much C as the parameter to watch. Organic Carbon. Try agressive GAC in a fluidized reactor and (not or) Skimming for a while. This would greatly reduce your dissolved...

I suspect he would not know the difference. Most tanks, normally with or without algae in the display, have a 4-7 days glass buildup with ~20 ppm nitrate and >0 phosphate.

I myself had "algae"...

Bacteria does, i.e cyano

Or there is too much C in the system.

Oxygen levels also matters. (Surface gas exchange, skimming, oxygen through photosynthesis)

http://www.advancedaquarist.com/2008/8/aafeature3

Related to this subject.

"Nevertheless, the empirical evidence can be construed to support a robust relationship between elevated DOC levels,...

This is related to toc in the system in some way? After i cleaned out my sump it stopped happening.

In terms of adding carbon to the water. As far as I can find, there is still no scientific study that tells us what TOC levels is dangerous for our aquariums if any. The scrubber should atleast not...