Thanks
1) equation is correct
2) equation is not.even though it runs at 500L/H it will still lose 25minutes of 3000l/H
3) i have the equation as 350*0.02
4) This is critical to work this formula out
As there is a loss out the other end of the machine the chemical strength of 2% will gradually lower.The chemical is circulating (number 4 above) but the strength will lower due to loss out the other end.How do i calculate maintaining the chemical strength at 2% due to losses out the other end of the machine...how much chemical would i need to continue to add (liters) and how often (time between adding)

Thank you