Sorry, another question as to how they work.
Do they have like a radius check when sealing?
For example if they check (not meant to be accurate) 10 blocks above, and 10 blocks below. If the sealer is sitting on the ground, then the 10 blocks below it checks is kinda wasted. So if I'm trying to seal a room with a ceiling about 20 blocks high, I should place the sealer 10 blocks in the air? Hope you understand what I'm asking.
Kinda makes me wish for a new block to make it easier. Like a single sealer checks a default size area thats sealed, any size can be checked for with a dial or something on the machine. The sealer then displays how many 'oxygen pumps' (new block) will be required (at full capacity) to seal the area. Should be able to place them anywhere too, being a gas etc. Way off topic, and I'm sure its been debated for ever how anything should work.
Thanks again.
Edit:
Need some expert help
I made a dome like in this site
http://www.instructables.com/id/How-To-Make-A-Glass-Dome-On-Minecraft/step2/Sizing-and-Flattening/
The size I made it is '47'. Look at the picture on that link to see what I mean.
Can any smart people tell me how many sealers I'm gonna need to seal it up? I've tried 5 so far.
1 sealer in each 'corner' (about 9 blocks from the edges actually) of the dome at ground level.
And 1 sealer in the middle of the dome, raised up about 10 blocks.
Still getting the too large message. Do I need more sealers, or is my spacing off?
Heres a pic of what I've done. Don't judge me, it took me ages to build this