I wonder if there is an actual problem such as uneven development that OP is trying to solve?
I use metal tanks also and takes probably 15 seconds or so to fill and empty. I've never seen any problem in the end result. I keep my development time greater than 5 minutes as that's what Kodak datasheet says. I find, if I tip the tank a little and aim at certain point in the opening, AND regulate the speed of pour, I can get good flow rate. I try not do it too fast where it starts to "burp."
If this question is a result of reading somewhere, uneven development could result from slow pour in/out and OP is not seeing an actual problem, then I'd not worry about it so much.
When you fill the tank it is right side up. When you empty it it is inverted. All the film gets the same time in the soup either way. I think you might be overthinking this a little.
I don't get this uneven development argument at all n i have been developing film for 50 years with perfect results.
I can understand if your development time is very short, less than 3 min, then 15 seconds may impact eveness. Hey, come on here, it taskes the gelatin about a minute to absorb the chemicals n get to work.... It's not an imediate on contact reaction.
But if you are developing for longer times, 15 seconds is nothing to fret about and won't make any difference in the final result.
Uneven development?... Dilute your developer a bit.
And if you read my entire responce, you'd see i gave advice learned from 50 years of experince.
Your rediculous solution simply defeats the purpose of using a daylight tank... WHY??? Duh hugh?
So why are you having such problems?... Might stem from your lack of reading comprehention, no common sense, or you've been watching too much television.
Btw the photo of the pines is beautiful!
Nice job...
And if you read my entire responce, you'd see i gave advive learned from 50 years of experince.
Your rediculous solution simply defeats the purpose of using a daylight tank... WHY??? Duh hugh?
So why are you having such problems?... Might stem from your lack of reading comprehention, no common sense, or you've been watching too much television.
BTW that photo of the pines is really beautiful.... Nice job
It always amazes and sometimes amuses me, as a moderator of this forum, to see what issues get people worked up the most. They tend to be things like: "do you need to use a stop bath?" and "which pyro formula is the best?" to say nothing of the camera brand rivalries and arguments about what film is best, and now we've got "how can I improve the fill/dump time of my daylight tanks?"
Let's all relax, soup some film, make some prints, and enjoy a peaceful Sunday.
It always amazes and sometimes amuses me, as a moderator of this forum, to see what issues get people worked up the most. They tend to be things like: "do you need to use a stop bath?" and "which pyro formula is the best?" to say nothing of the camera brand rivalries and arguments about what film is best, and now we've got "how can I improve the fill/dump time of my daylight tanks?"
Let's all relax, soup some film, make some prints, and enjoy a peaceful Sunday.
If you don't have a problem, great! You are not the person who needs help.
Those who DO have problems might, though, and that's my point.
I had uneven development problems. And I cured it by lowering the film into an already full tank. If somebody else can benefit from that info, I thought it would be handy if somebody provided it.
I agree some blood preasurs do run high here.. But please explain what this poke in the eye was for?
I'd say diluting his developer will extend the time n cure the uneven dev problem without compromising the most valuable feature of a day light tank... Using it in the day light!
So 100 ways to skin a cat... Pick one?
:munch:
Uneven development is more likely to be a problem with short development times or very large daylight tanks, and you can get uneven staining with even very dilute staining developers, like PMK pyro.
If you are worried about filling and emptying the fluid content of your developing tank, then consider this alternative:
Use tanks that already has the liquid in them, and use lifters to transfer the reels from one tank to the next in darkness.
This completely eliminates the risk of uneven development due to pouring liquid into the tank.
Obviously you need more than one tank for this, and a different working method, but it is a better way of uniformly coating ALL of the film with chemistry within a split second.
Edit: Or what konical said above.
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