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| I’ll start by saying that this is just what I do and I’m not saying it’s the best way to do it. Personally I believe that the best way to rinse things is with many small batches rather than one big one.
I just switched from that blend to fungicides for peas 2 days ago. My sprayer has a stainless steel tank so that helps a lot but I did something similar when I had a plastic tank and booms also. It has always worked for me.
The sprayer has a 150 gallon rinse tank. When the main tank runs dry I switch the pump to suck out of the rinse tank and spray it through the tank rinse nozzles. I also cycle the sparge valve to get fresh water into it. I then close the tank rinse and switch to sucking out of the main tank to spray out whatever water got transferred into it. Depending on the day but I usually get 5 to 7 small rinses out of it. Just to be clear I do not recycle the water from the main tank back to the tank rinse nozzles. Only the fresh water from the rinse tank goes through the tank rinse nozzles.
When I get back to the tanker I put about a gallon of ammonia into the chemhandler and then refilled the rinse tank on the sprayer. I repeat the same steps as above.
I am a firm believer that it is much better to use a given volume of water in multiple batches rather than one or two larger flushes. In theory every small batch should have less and less chemical in it and by the last small batch virtually no chemical should be present.
If I know I will have enough chemical in the main tank to finish the field I will often put a small amount of ammonia in the rinse tank to use for the field rinse out. If I do that I often won’t do anything else or maybe just one final rinse of clean water when I get to the tanker.
I don’t know if all of that makes sense. I guess the key points are many small rinses, only wash the walls of the tank down with clean water, and make sure to rinse any other circuits like the agitation every time with clean water. Oh, and if I am leaving it overnight I always flush the booms the next day when switching chemicals. I figure that the water in the booms have too much time to absorb any leftover chemical in the booms if they sit for too long.
Edited by havin’funfarming 6/28/2026 14:11
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Ammonia or Bleach tank cleaner ?
