I had the following pet project in mind to increase the effectiveness of the hot wash in my milking machine, however it seems a bit too easy for someone not to be using the process, I was wondering am I missing something. Background: Simple Alfa Parlour, 10unit with ACRs. 2" milk and wash line, double diaphram milk pump. Washup as follows -Rinse with cold water, would put in 100L of cold water. -Hotwash with Hydrosan detergent, in 75l of water, I use water from the mains, hot water starts at 75C and then I leave the whole lot circulating for 10mins. -Then rinse the whole plant with 200L of water. -Milk Filter removed for wash cycle, handwashed, and then put recycled for the evening wash and then dumped. One thing Id like to change is - water always pools at the back two units in my parlour so they see most of the hot wash, was wondering is there a way of balancing that. A little pet project I had in my head for the wash trough to make a more vigorous wash I was thinking about is as follows. -Place a Tee on the suction pipe, thats the pipe which sucks the water from the wash trough, and put a solenoid valve on the Tee end of this fitting, and have it open to the fresh air. When the solenoid valve is open only air will be pulled into the wash line. -Install a float switch same as on a submersible pump in the wash trough, the float switch will make when wash trough is 50% full and break when wash trough is empty. -Have the float switch control the Solenoid valve such that when wash trough is 50% full solenoid valve closes, the suction line will now empty the wash trough rapidly giving a v vigorous wash. When wash trough is empty float switch breaks and solenoid valve opens. With the solenoid valve open, there will be no suction, and only air will be pulled through the wash line, chasing all the water out into the clusters. This will then allow the water to circulate through the plant and back to the wash trough, when wash trough fills up 50% then solenoid valve closes and the cycle repeats. Am I missing something as my project is relatively easy & cheap ? indeed so easy and cheap everyone would be doing it if it is as good as it appears.