is this fish tank base glass resealable to hold water again link in description?

It can be done. When I first got into the aquarium hobby I was a teacher, and so to afford my new hobby on a teacher's salary, I had to finance it by learning to build and repair aquariums. If I built about four aquariums, I could sell three of them for my costs and keep the fourth for my time. Eventually I had over 100 aquariums in my fish room.

One thing or two things the photos do not show! Does this container have center brace(s), or marks where some reptile keeper removed the center brace? Is the glass about 12 mm thick? If yes to both, it can be made to hold water since it was originally designed to. If the answer is NO to either question, it was never designed to hold more than a few centimeters of water and cannot be converted to an aquarium.

OK so if it has one or two intact center braces and the glass is 10 mm thick or thicker, the bottom can be replaced by setting a new one inside the tank. It is cleaner to remove the old one, but it could be set on top of the old. You will have no resale value for it unless you remove and replace the old bottom. I would also eurobrace the bottom and top of the tank. There is a link to a photo showing eurobracing on the top of a tank, but I'd use it also inside the tank flat on top of the new bottom glass.

http://www.cyphos.com/forums/showthread.php?t=2293...

The bottom glass should be thicker than the sides, about 18 mm.

A book, The Living Aquarium by Peter Hunnam, Grange Books, London, has a good chapter on building/repairing glass aquariums and it would be specially useful for you if you live in the UK.

If you have already bought the tank, repairing it may be the only option, as a reptile tank if that is what it is, or as an aquarium. The cost of glass can be close to the cost of a new whole aquarium, so I hope you paid very little for this tank.

Wired glass was used for the bottom because it can be had cheaper than regular glass sometimes as cutoffs. It is not really stronger, just adds a security look to a window glazed with it. The cracks in the bottom are heat cracks due to an improperly installed reptile heater. They are not impact or stress cracks. If it can be repaired as an aquarium, sell the reptile stuff, especially the heater which can't be used with an aquarium safely, to recoup some of your expenditures.

I have had no success whatever in repairing fish tanks with cracks in the bottom.

Or, to be more precise, I have had temporary success, which is much worse.

I tried sealing all the cracks with silicone sealant, and it worked for a while, but the cracks got bigger with time, beyond where I had sealed, and they started to leak.

I then tried putting a whole new panel in the bottom, and sealing all around the edges. This worked very well for a while, until late one night I heard a loud "Bang!" followed by the sound of all the water pouring out of the bottom of the tank. The glass underneath my new piece had continued to crack, which made it sag, which eventually compromised the seal I had made.

It would probably work to completely remove the bottom piece, and replace it with a custom-cut piece of strong plate glass. But for that much money and trouble, it would probably be better to just get a new tank.

A tank packed with water, decorations, a clear out, a heater, and so on weighs about 10 kilos in accordance to gallon. So your ten gallon will weigh about 10 kilos. i'd bypass with a fish tank stand because if must be terrible in case your shelf gave out.

Either replace the base entirely or put in a new bottom on top of the existing one.

Edit:

What is the thickness of the glass? I agree it might not be thick enough to hold water for an aquarium!!!

That's mainly a vivarium, you can tell by the shape and the warming mat included. I would not trust that tank for anything beyond wet soil, certainly not as a fish tank