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Or do what I have done and hand other lights at a different height between the ones you have in place already...
(Ive got 12 cfls runing on mine)

Im having a similar problem with the centre of the screen bare white area again this week.
Closer examination revealed that the centre is bone dry, the areas where the flow is ok is
thick with...

I have today done my spare screen, I used a hacksa blade and laid the screen over the back edge of a pastic washing up bowl.
Have acheived a pretty rough surface....

Really, I havent got a hole saw, I run a website design and search engine optimisation company, and I have no need for tools generally.
This is why I borrowed tools from a freind for this build...
...

No I decided that it wasnt worth wasting time demonstrating something that was already known and accepted, so I roughed both sides of the screen.
However the middle was probably the least roughed up...

So what is the general opinion of the state of the screen and the effectivness of the scrubber after the first week?

I noticed there was a patch in the middle that looked burned, also there isnt...

[attachment=0:3q0vewo0]cleaned-after-week1.jpg[/attachment:3q0vewo0]

Here is a photo of the screen cleaned very carefully after the first week...

I have to say it has made an amazing difference to the tank already...

[attachment=0:3w2p34oi]screen-week1-close2.jpg[/attachment:3w2p34oi]

and another one showing a vertical shot of the screen...

[attachment=0:13uzkfi6]screen-week1-close.jpg[/attachment:13uzkfi6]

[attachment=0:2vc5q2n0]screen-week1.jpg[/attachment:2vc5q2n0]

This is the screen after the first week, it is actually bright green mostly, but for some reason it came out very dark in the photo....

I did find that removing the lid of the scrubber with all the lights hanging from it in this way is a major pain in the rear.
I will need to find a way of holding the lid out of the way in the...

The photo above shows the placement of the lighting, and how close the lights are to each other, and to the screen.

[attachment=0:1do9jcg0]week1-inplace.jpg[/attachment:1do9jcg0]

ok this is week 1 over, so here come a few photos...

who has experience running red sea Pulsing Xenia and a Scrubber, do they mix well?

Theoretically they should be happier in a scrubber system than a skimmed one as they are filter feeders

The extra lights I ordered from eBay have arrived now and been added to the 6 existing lights.
So now im running 12 x 18w CFLs 18 hours a day. On Monday I will take the screen out and see what it...

It is coming back much faster though this time round.
I have some green growth on the back of the screen where the light is closer, and loads of dark growth over the screen on the front where the...

That's called "making brownies" :)[/quote]

Cant say I would like to taste them though.....

It looks like im starting again, I used the bypass valve to pass the water through a filter sock and then forgot to switch the flow back to the scrubber till the next day, so the screen dried out,...

Something strange happened, I changed my photo period from 9 hours to 18 hours as recommended by Santamonica, and over night the screen went from a black/dark red-brown colour to bright green......

Excellent, thanks for your replies.
I will get to work accordingly...

So on a seperate point, what is the optimum lighting period for a new scrubber on a high nutrients tank...?
8 hours, 9 hours or more?

Thank you for the clarification....

Ok a couple of questions for you:
FAQ says not to leave lights on 24/7.

Am I right in understanding that the algae grows when the light is on and filters when the lights are off?
If this is the...

Each of those bulbs shown in the photo above is now about an inch from the acrylic and an inch and a half to 2 inches from the screen itself...
The bulbs currently are only lighting the lower half...

What the photo above doent show you is the reflectors configuration im using at the moment...
I took the oportunity as I have the scrubber apart to wire up to clean the screen and give it a propper...

[attachment=0:1vrnz614]IMAG0499.jpg[/attachment:1vrnz614]

I have each light wired up seperatly and all plugged in to a surge protected extention socket,
instead of wiring them all in to a single junction box and then having one plug come out from that....

[attachment=0:34oc7szo]IMAG0495.jpg[/attachment:34oc7szo]

[attachment=0:2zmt5x2u]IMAG0498.jpg[/attachment:2zmt5x2u]

So far I just have the 6 lower lights wired in...
6 more to go, but im waiting for the slip on angled lamp holders to arrive first before I can add those!

So I popped out and bought the electric I needed and set about atarting to wire up the scrubber...

[attachment=0:2cdcztsr]IMAG0496.jpg[/attachment:2cdcztsr]

My Box of 40 bulbs arrived today....

[attachment=0:1qxogwo3]IMAG0497.jpg[/attachment:1qxogwo3]

By the wat the acrylic mirror bends really easily if you heat it up...

Looks good, Ive just ordered a box of 40 of those.
Are you going to light the other side too?

Keep us posted on this one, it looks very interesting.
(In fact if you were able to take a photo diary of it that would be even better...)

Hi Shango, sorry I cant help on the corals front, but I just noticed your Essex Reef Club logo, I live in Essex,
Just thought I would say hi....

Ive got some red patches on the screen today...

Right so ive ordered a box of 40 x 18 watt equivilent to 82 watt 2700k energy saver bulbs
I will be running 6 bulbs in the front (with 3 higher up and 3 lower down) and the same again on the back...

So that would mean then that the same principle would apply to using silver foil, it would be no good if it was flat...

Thank you

Have got much more growth starting on the screen today by the way. Im very pleased with the way this is turning out.
Ive ordered some of the electrics from ebay to wire in the lights, but im yet to...

Pease can you define DOC?

When you say they are not going to do anything I assume that they wont do any less than they would on a smaller screen, so if the same amount of algae that would grow on a smaller screen will also...

There is 160 true watts there on one side, how many watts do you believe it needs per side?

I just thought it would make a useful visual example to show the growth roughed up and not...

im getting a very good fast, strong and even flow of water over the screen...

[attachment=0:1o149w21]IMAG0484.jpg[/attachment:1o149w21]