Polydome fish tank?

Hi All,

I've been following the Polydome threads, and I recall that one of you mentioned a Polydome Fish Tank that has a hemispherical shape. I can't seem to find any info on the Polydome or Polytank web pages about that particular item, and several web searches for similar products have been fruitless. Can one of you point me in the right direction?

I am intrigued by the possibility of fabricating an observatory out of one, using hot air welding techniques to rig up a slot with a weathertight HDPE door that slides in channels along the slot's edges. I'd like to find out the nominal dimensions to determine if I could use a steel cattle feeder ring as the sidewall frame and rotational track. It would be simple to use HDPE sheet to panel the frame, while keeping the whole thing reasonably light and relocatable in component pieces. Do Y'all think this would be viable?

Best wishes,
Jason Glass

Hi Jason, Thought I might drop a line in here. I am using the rim from a fider optic cable spool for the bottom frame and the rotation ring. Around here you can get them for free or at least scrap metal prices. They are 96" in diameter and 1.5" square tubing. By welding support brackets on the bottom ring I can use skateboard wheels for the rollers and the top ring rolls real easy. Add four refrigerator wheels at 90 dagrees to keep the rings aligned, alittle silicone tube sealant and some screws to hold the dome down and viola! You have a rotating dome. Tom has the right idea about the shutter it seals up real nice using the silicone.
Hope this helps, I have found the simpler you keep things the better they work. Keep us up to date if you can and we will help all we can.
Magic Man ;~)

Hello All,

Polydome fish tank- on the polydome site (I have not been there recently so it may have changed), you can get access to polytank.com, it is the same company. At polytank they have a fish tank model 10260, which if you have read my posts you know is 98" in diameter not 102" as the web site indicates. It is about 74" high, and you can get it in black, blue or opaque. I got the blue one, and it is a super size for our application ... unfortunately I had built a base for the 102" and did not want to kluge the tank to fit a 101" base ...

Hope this helps ... if you have trouble finding the fish tank, repost and I'll search the polytank site again.

Dan