The water is not a problem but the substrate and LR are. It looks like loneracer has that well covered though. Now to come up with a tank that can be set up for a couple of weeks with the transferred medium before the octo out grows his current home.
There is one other possiblility that looks very much like a briareus in many colorations. Unfortunately, my photos of Beldar are not on the high quality side and don't show some of her wonderful patterning. We have seen several animals in the Macropus complex this last year so also take a look at Bel's thread. In person it is fairly easy to distinguish the Macropus group from the briareus but not so easy in photos since both will sparkle green and have similar color variations but one thing of note is that the Macropus group all seem to have longer, thicker front arms and much smaller, frailer back arms. The difference is significant and not a maybe. Don't confuse this with new growth though. Truncated arms that are regenerating are usually significantly fatter at the source and then significantly thinner starting at the point of regrowth.
Photos would be most useful. If you can't add them, please send me an email with attachments (click on my avitar for the option to send me an email, not a PM) and I will upload them here.
There is one other possiblility that looks very much like a briareus in many colorations. Unfortunately, my photos of Beldar are not on the high quality side and don't show some of her wonderful patterning. We have seen several animals in the Macropus complex this last year so also take a look at Bel's thread. In person it is fairly easy to distinguish the Macropus group from the briareus but not so easy in photos since both will sparkle green and have similar color variations but one thing of note is that the Macropus group all seem to have longer, thicker front arms and much smaller, frailer back arms. The difference is significant and not a maybe. Don't confuse this with new growth though. Truncated arms that are regenerating are usually significantly fatter at the source and then significantly thinner starting at the point of regrowth.
Photos would be most useful. If you can't add them, please send me an email with attachments (click on my avitar for the option to send me an email, not a PM) and I will upload them here.
I guess I do too, just not of the saltwater variety. I just asked my future housemate if a house full of wriggling scuttling things... "As long as I don't have to touch the darn crabs" was pretty accepting in my eyes 
) whilst calling around a few of my LFS and the custom aquarium builders yesterday a few of them mentioned they had second hand tanks. They were much clearer on what had been kept in the tank and what treatments had been used, some of them were honestly still unsuitable but it could be another place to check if the budget is an issue. It isn't easy dealing with parents wishes against your own or your friends even when they do know best 
) is encouraging experimentation. The new feature is available to Staff and Supporters. 
