Okay so I know some people make their own sumps but I just wondered whether anyone had attempted to make their own tanks? I'm thinking of making one because then I have it the size I want and not the designated sold by retailers so would love to hear of any past experiences !
I considered it for a while, but adding up the costs of making your own (specialist thickness glass cut and ground to your specfic size requirements), specialist silicone (NOT easy to source), home made bracing, homemade support cabinet underneath, negotiating engineering a decent light set up, etc
Needless to say i added all this up and thought ahh to hell with it and bought a ready made tank, reliable brand and guaranteed, tbh it makes much better sense (and is cheaper too)
if it's a custom size you're after I'd certainly read through and check out all the companies out there
Making a sump or a tank the technique is exactly the same but with a tank you dont install the dividers.
I built a sump of about 120L capacity (120x50x23) using 10mm plate glass, aquarium sealant and duct tape. Little else was required and it worked beautifully. Not hard at all but it did cost me in excess of ?100 for the glass. By contrast a 120L manufactured tank of standard dimensions could cost under ?50. Having it made for me was quoted at ?250 - which was just silly.
Having a tank made is probably easier than making one your self. Ask your LFS, they might well know someone. I'm having a 2m long 100 gallon tank built for my study and ordered it through my local fish shop. Otherwise you'll need to source the silicon and get a glass merchant to cut the glass for you. You'll also need to make sure its thick enough and work out whether you need bracing.
Good luck, a new tank is always fun
To Dive or not to Dive..... What a stupid question
*sigh* Whilst I was searching for a silicone for the tank I was going to be making, just the words 'aquarium silicone' dont really tell you of the max pressures the silicone can withstand. more research than just 'aquarium silicone' needs to be done, you need the figures for example; like this one does http://www.absealants.co.uk/product_13-2-8_Aquarium-Silicone.htm
I asked all these questions (and more) myself when I considered it, I was planning a whopper as said before after all the calculations, try outs and checking the shopping list I chose to save myself a fair few hundred quid by buying one - with a guarantee!