Creatures Caves

Interesting. I'm figuring it out, and it's kind of fun, despite being time consuming. I put a camera agent (floating hover-thingies) into the room, and it's doing fine. I'm going to see if I can add other agents, so wish me luck!
Oh, and I noticed that it's possible to put two blocks in the same place, and that they often show up through each other (ex: Dirt block underneath sea block= sea block on top, that's transparent). Not to mention, stacking water blocks make it seem like the water is deeper running!

Oh, and does this metaroom overlap with any others?

EDIT: I used the Tuba Seeder in the metaroom, and it works on dirt blocks! Oh, not to mention, the Tuba Seeder doesn't seed on areas that lack blocks, such as the very bottom, and it doesn't seem to seed underwater, or on metal (Or it's a combination of on sea water and metal, or something).

EDIT2: Oh, and the larger the amount of blocks, the longer it takes to open and close the edit panel.

EDIT3: It turns out that when using fresh water, only one fresh water block can be stacked on an already existing one, but if more are added, the texture and color doesn't change any further than after adding the first, but with sea water, I've tried 3 sea water blocks in one place, and it's color is deeper in comparison to 2 sea water blocks, which is deeper than one sea water block.
Along with that, tubas DO grow on metal blocks, but they have to be above ground. Agent's don't disappear when touching the very bottom of the grid.
Things are running smoothly, and I've encountered no bugs but the loading time being progressively longer based on the amount of blocks.
Though, if you stack blocks (two+ in same grid block), it is treated as one block when loading, and, they are seperateable.

EDIT4: When a dirt and water block are stacked in the same grid spot, it is treated as a dirt block, meaning, Tubas can grow there.
Since it is treated as a dirt block, you cannot place fish in the water segment of the stack.
I tried using the block editor in another metaroom, and the grid appears for that metaroom, and when placing blocks, they appear in the middle of the grid spot. If you close the editor, then the block disappears. Though, I accidentally uploaded a different metaroom twice, plus the critters and plants (but not twice each like the room), but I got an error message saying "Map Editor can't change this metaroom; I'm still in it", but it's not one that prevents my game from working, it just appears randomly. What does it mean, and what does it do?