Develop 120 roll films in deep tanks

Matroskin said:

Do you mean flipping?

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Yes, that's the method that's AFAIK beyond any doubt by anyone.

Matroskin said:

And will I get non uniform developed film in a case I will use an the agitator stick to rotate the center column.

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Well, opinions vary on this, but personally, I get even development using the agitator stick, on both 35mm and 120 film. But you may find that others opine differently - sometimes vehemently so.

Matroskin said:

PS For the one 120 film I use stick to agitate and pretty glad with results.

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You're not alone

Matroskin said:

Do you mean flipping?
And will I get non uniform developed film in a case I will use an the agitator stick to rotate the center column.

PS For the one 120 film I use stick to agitate and pretty glad with results.

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To each their own, but inversion (flipping) is common and it's a common technique.

If you are fine with just using the agitator stick, then all is well.

Matroskin said:

will I get non uniform developed film in a case I will use an the agitator stick to rotate the center column.

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I've used the swizzle stick for all the C-41 I've done in my Paterson tanks -- I twist over as wide a range as my finger and thumb can manage, and treat one twist-and-return cycle as equivalent to an inversion, and it's seemed to work fine. I did it that way (instead of inversion) trying to minimize oxidation for developer in replenishment (though I'm not sure it made a significant difference). I've also had a number of tanks over the past half century that couldn't be inverted (Yankee, FR etc. plastic tanks), so could only use swizzle stick; once again, it works fine if you don't wimp out on how far you turn and how much you agitate.