[Lardman]

This is MA33 in Pineapple / Orange / Grapefruit (also known as POG)

Foams a bit doesn't it  I think its worse than EC-1118 which tried to escape out of the air lock several times 

[grinling]

Mine looks foamy and one did escape, the room smells enough to send you high

[Kleftiwallah]

Once the fizzing has died down, you need to top up with sugar water to leave as little airspace as possible.      Cheers,     Tony.

[Lardman]

Once the fizzing has died down, you need to top up with sugar water to leave as little airspace as possible.   

That's the primary, Not much chance of oxidation with 2 inches of foam and layer of CO2 sitting on it - but I know what you're getting at  Its due for just over 1 ltr of water when it stops looking like the quatermass experiment 

Mine looks foamy and one did escape, the room smells enough to send you high

Mine had guava in and it made a really nasty sticky mess all over floor.  Actually that's the one taking forever to clear 

[Alastair-I]

The current elderberry cordial batches I have on the go each had a 1.5" head of bright purple scummy foam on the second day!  it's subsided a lot since.

I've come to think (in my very limited homebrew experience) of the first few days of the primary as the "bready phase".  I was interested to read over the weekend that this foam on fermenting liquour has been skimmed off and used as the yeast starter for breadmaking.  I might try that one day with the head from a batch of TC.