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Mine is showing good results already after 7 days. The 150Watt MH light is soon to be replaced with GU10 LEDs. However the sump glass has proven stable from the heat generated from the MH light being 1inch away. :Cheers:

Well I have about 400g of LR assisting to brace the plastic mesh until I have time to perfect the balance of the mesh :frustrat:

I am trying a bit of live rock too. Seems to be doing the same job so far

That is why my question generated. Certain types of glass, ie tempered glass can with stand heat, others can't. I have no idea what sump glass would of been made of. But anyway, I am looking at replacing that light with one recommended, and perhaps try and fit the MH light into the tank some...

Seeing your great results, I think I might ditch the 150Watt MH light and get a 13watt light.

It is a 150Watt metal halide light shinning about 1inch from the glass. The glass does get warm after a few hours. Just that if it is a risk, I would rather not do it, then do it and the sump glass cracks, tank drains and everything dies.. I am leading to believe it won't do any harm...

Okay without your sarcasm, it is not "shinning" the light that "hurts" the glass, it is the fact that a light gives off heat, which can heat up the glass, with the water pressure in the sump could create a weak spot in the pane of glass. Why else was tempered glass made.

Am I just confused then? This algae scrubber concept works with lights shinning directly onto the sump glass around 1inch away. Surely whether the constant heat from the lighting stressing the glass would of been considered? I have had mine running for 3 days now around 14 hours a day cycles...

Hi, I have a DIY algae scrubber in my sump. I have a 150Watt bulb 1 inch away from the glass. Will the light on +-18hours a day cause damage to the glass via the heat it is creating, ie stressed glass or something?

I set this up the weekend. My only concern is that with 150Watt of light directly on to the sump glass, may it cause it to stress and eventually crack?

Still no luck on revealing the awaited design??

Any update???? I am dying to DIY this in my tank! Current status - no scrubber!

Wow I would not of thought that would happen! Good info!

I got some furry/hairy mushrooms last week. If they do detatched, what is stopping them getting chopped up in the fans?? Would they poison the water?

Hi, When my inverts shred, is it best that I take the shell out or does leaving it in the tank do no harm? Thanks

I did exactly what you did. I cycled my tank for a week, and it was having perfect test results. I introduced 2 green chromis. They seemed very shy and nervous in my tank. 2 days later, I bought another 3 green chromis as they are shoaling fish. They all came out and were no longer shy nor...

The fish shop I bought it from, the guy that owns it is a "fish doctor" if that is the appropriate term, and he told me that it is poisonous. But either way, not going to dwell on its death, just to understand why it died and prevent further issues. As mentioned my other corals are doing...

Thanks, I was leaning towards your opinion myself. That picture is about 3 days old now, I took it out last night after which the "nodes" where completely brown and no signs of health or life. I am thinking that it must of been disease or critters that annoyed it so much to close up and pretty...

Hmmm it was a hard lesson learned. The coral is apparently poisonous to fish if eaten, and so the fish wouldn't eat it. After my initial thoughts of it being eaten, I realised that it is just dead bits rotting off. There were tiny white little bugs that were swarming the coral when it first fell...

I have a pussey coral and green clove polyp. They both doing really well. I tried repositioning coral in the tank and no luck at all. Coral was open and doing well for first 5 days in tank, after that, just closed up.