that would be normal
@wnipper, the whole of your viewable screen's water will be red if crimson is the dominant biome of where your character is standing
you can test that by putting one single block of water in each of your pools
so I have gotten back to working on including ocean and mushroom in a KikFishingHole2 ^_^
and my first order of business was figuring out exactly WHERE on my world does the ocean area start/end
I spent a good few hours playing with one deep lines of sand with the time sped up on journey mode growing seashells
(I had them popping up as low as lvl 20 underground before I figured there HAD to be an easier and faster way to find the outer edge of ocean biome
also, for those interested it seems you need 8 blocks of free space above your seashell farming line for them to pop up with any decent speed, more testing needed)
so I had the bright idea of using pylons to find the limit of the biome areas
then commenced a bunch of placing and testing the ability to teleport etc etc
and thank fudge for the fishing hole cauuuse
it seems the check blocks of the pylon for inclusion in the appropriate biome are the top two of the leftmost column (indicated here by Xs)
Pylon = a 3 wide x 4 high sprite
xoo
xoo
ooo
ooo
I tested in my fishing hole where the background walls show the area where the biomes are active
a) if the left most column of the pylon sprite is not included in the appropriate biome it stops functioning and you get the message "This pylon is not in the correct biome to use"
b) in the following snapshots, this is the last functioning positioning of the jungle biomes top and bottom as I test moving them to the right
the only two blocks of the sprite that NEED to be included in the biome area for the pylon to remain functional seem to be those top two leftmost blocks
c) so if I use THIS to find the functional edges of the bottom of my ocean biome, I get :
my western ocean bottom left corner starts at 4 underground with the world edge at 8316 west
same western ocean bottom right corner starts at 4 underground and 7636 west
do some math : (8316-7636)/2 = 340 tiles wide (verified by counting ingame ^_^)
d) and the bottom limit toward the center of the world stands at

which would make my ocean biome on the edge of my world 340 tiles wide on a large world (wiki needs to be tweaked ^_^)
now to go find the sky/upper limits of the biome...
6.5 hours later >_< (got distracted finding the pylon activation range which I posted in another thread)
e) my western ocean upper right limit sits at 734 space, and 7636 west

that space height divided by 2 gives me 367 tiles height
remember that my western ocean bottom right corner sits at 4 underground and 7636 west, so that gives us 2 more tiles of height
for a total of 369 tiles height (367 surface into space + 2 tiles underground)
OOF, okay that gives me an active ocean biome area of 340 tiles wide by 369 tiles high on a large world
thank you for your patience

^_^