Wash water temp

I have used a clear plastic shoe storage box for my water for years It holds about 3 gallons I would guess I use only one shot so it relatively easy to adjust the temperature. The fix temp is adjusted first heating it or cooling it to what ever the tap water is If the tap temperature is too high ice is added until I get to a working range 68 to 72 much higher creates problem of very short developing times. The wash is from the tempered water in the box using the Ilfords dump and fill It not only conserves water it reduces chances of temperature fluctuations. There is enough water generally to handle a reel tank and have a little left over to rise the reels and tank I learned long ago that while film emulsions are tough the best results are when all the solutions are the same temperature. There is a condition of reticulation that is so fine it is confused with grain