lduncan

Yip, that's one of there primary functions. Regulating coral surface area, for respiration, and in this case light gathering area. Layton

Don't get too carried away with polyp extension. You can't infer a whole lot from it, as polyps have a wide variety of different functions in corals. Layton

Mulford plastics say WeldOn 10 for PVC to acrylic. But they can't get it. Dave (nodle) said that there is another plastic company which has adhesives and glues with cross-references to WeldOn codes. He may be able to help. Layton

Equivalent of that every couple of days for me. Layton

I don't notice this particular one growing much. I've got other corals which I notice grow, so they must be going faster than this one does. I was surprised when I actually looked at the pics of this one. 2 new radial coralites in 10 days. (And the tank is filthy at the moment too!) It's no wonder my tank consumes so much alk and calcium! Layton

side by side 28 days

Slow growing A. horrida. 8/1/06 18 days later (26/1/06) 10 days later (6/2/06) Layton

The 30th of Feb doesn't exist. Layton

Yeah, they seems to be available in longer sheets, but nothing suitable for making a single 2m x 1.6m base that i've found. Goldpine do 25mm, but again only 2.4 x 1.2 .

Ok, could we give up on this line of topic in here, i've asked the mods to split the topic or remove these posts. Layton

Sometimes people confuse fact for opinion, and vice versa. Anyway, i've been exploring the Royal Exclusiv website a bit more. This company is awsome, their aquarium constructions are top notch. Check this out: http://216.239.39.104/translate_c?hl=en ... uage_tools They were called in to rebuild an 15,000L aquarium after the 40mm glass panels exploded! Crazy! Layton

Well put it this way, you wouldn't notice the difference between a 20mm panel and 2 laminated 10mm. It won't end up looking like normal float glass after lamination. Here is 3 15mm opticlear panels laminated together: There are potential problems with lamination though: This is apparently because a 0.75mm laminate was used instead of 1.2mm. Layton

Marine preferably, but considering it's going to be covered in PVC, a lower grade may be all right. See what the price differences are like. Layton

Yeah, it would just be the front panel. Layton

Thanks, yeah, I guessed that the all glass was going to be way too expensive. I might ask around the net about lamination and why type is best for tanks. I really would like low iron, so laminating 2 8mm or 10mm sheet might be the only option for that. Layton

This place does almost anything, but they are in Auckland. http://www.plywoodandpanel.co.nz/ Transporting would be a pain. Layton

OK I think that's enough of that in this thread. I'm having some problems tracking down a supplier of thick plywood. I'm looking for at least 25mm thick, also is there anyone who deals in sizes larger than the standard 2.4 x 1.2m sheets in ChCh? It would be nice to have the base (2m x 1.6m) as a single piece. Anyone know of plywood suppliers other than Bunnings, Placemakers, and Mitre 10 mega? Layton

All I said is that I don't like the way he does business. It's my personal perception. Others may see different, i'm not about to stop them. That's fine, that's you. I don't deal with people I don't like, don't trust or generally rub me the wrong way. There are usually plenty of other people around who i'm better off dealing with. Often it doesn't come down to money. Layton

Nothing to do with price or quality etc. I choose who gets my business, and based on your history, I don't wanna deal with you. That's all. Layton

Rather not. I don't like the WAY he does business. Layton

Because the tank itself would cost more than my house!

Salt is hygroscopic, it will absorb water from the atmosphere, so if it is humid, it will absorb more water. Layton

All it is is a mp3 file which someone records, and you download it onto your mp3 player. The term podcast usually includes a technology called RSS (Really Simple Syndication) which basically means that you can subscribe to a particular podcast, and whenever there is a new episode available you are notified, and can choose to download it and listen. Layton

Hey, maybe my favourite element iron can help reduce this problem. Have a look at the IronEx experiments. http://www.wired.com/wired/archive/8.11/ecohacking.html This small experiment removed 2,500 tons of CO2 from the atmosphere in around two weeks! Just keep the iron away from the reefs, you don't want what's happened in the Caribbean to happen in other reefs. Layton

That's I very good point. It's the first thing I wondered when I saw them. I bit of background on motors (in general). There is always a gap between the rotor (motor shaft) and the stator (motor body), the smaller this gap between them, the more efficient the motor (smaller gaps mean tighter tolerances and more expensive motor). The strength magnetic field which hits the rotor from the stator is determined by the gap between them, and the "relative permeability" of the material. In the case of the streams, the water between the rotor and stator has a relative permeability of around 80. In the case of the vortex, glass has one of 7. This means that water is 11 times better at responding to an applied magnetic field than glass. So with the vortex, you have a larger gap, and a lower permeability between the rotor and stator, which I think must result in much lower efficiency than streams. Who knows, they may have come up with a more efficient propeller to compensate? Layton