How do i glue cuttingboard underwater?

[Shaar]

1) ok before anybody flames me, i filled up the tank with RO/DI water already becuase i was able to get ahold of some. the tank is a 55 gallon and i just got my cuttingboard today cut for me. i dont have containers to empty my tank so can i glue the cuttingboards down to the bottom glass with something? they float right now and i don't have live rock yet.

2) also another quick question so i dont have to waste another thread and bandwidth... i want to use greatstuff foam to make some walls. i've read the threads about it but still wasn't sure about one thing. i know the standard way would be to apply it directly to the tank when its dry. but as you already know, i already have my salwater set up in there and no place to put it to empty it out. is there a way i can put the great stuff on a board or something, let it dry/cure, get it how i want it to look (including paint) then somehow affix it to the rear of the tank underwater? (I know it will float naturally). but can i use suction cups or something to attach it to the back glass?

thanks and sorry for the lengthy post.

 

[WaterKeeper]

Cutting Board? Are you planning on a reef tank or is this a seafood restaurant?

I'm not sure entirely what you are talking about Shaar but a gel type super glue (permanent) or silicone (can be removed) should hold it in place. I guess you are making an artificial foam background. Again, you can glue it with super glue or silicone sealant. Both will cure under water.

 

[Shaar]

no i'm doing a bare bottom tank. using starboard (IE cutting board) as the bottom. am i the only one thats heard of this or something? i know theres TONS of threads about it on here. i just didn't know if silicone was save to cure underwater or if it would even hold the starboard down til it dried.

hope you know what i'm talking about now...

 

[WaterKeeper]

Yip, and the silicone will work; you may need to place some weight on it to hold it down for a few hours.

 

[Shaar]

excellent. so will i need to put a bead all the way around the bottom or can i just put it in the corners. is there a real benefit of sealing it to the bottom? if i have enough flow in there the D shouldn't get trapped underneath hopefully but i assume it probably will. i'll probably need to go get more silicone then.

 

[WaterKeeper]

I'd bead the entire perimeter. That will keep stuff from collecting underneath. Since you can scrape silicone off the glass it presents no problem.

 

[Shaar]

so should i lay the starboard down and weigh it down, then run a bead all the way around the top edge and the glass? it seems that would be the best sealing method. please correct me if there is a better method.

 

[jjirsa78]

I'm not sure about superglue, but I think even aquarium safe silicone needs time to cure before it's "safe". I'm not sure if it leeches any chemicals during that time that would stay in a tank, but I'd do a little more research first.

Alternatively, it should cost about $10 to buy two big tubs to hold all of your water and do this the "right way" - not much more than you'll spend on silicone, I'm sure.

 

[Shaar]

does walmart have big rubbermaid tubs? probably 25 gallon or 30 gallon tubs is what i'll need.

true. if i remove my water, i can then dry the tank and put the great stuff foam on the back of the glass good idea. i'll probably have to do that saturday