Took the WMBS club two years of negotiation for permission to use DYOFIX at the New Brighton lake , this time last year we were taking a lorry load of weed out every two weeks, there's nothing down there now . . .
It's got no affect on micro algae that just dies out when all the nutrients are gone , rain dilutes it , sun bleaches it , and needs to be topped up monthly x 10% plus a complete charge every three - four months , in our case that's 300g full charge, you could dose it heavier, but that's just wasting the dye , it's not needed , you need to manage the lake by clearing out anything organic that's in there before it sinks to the bottom, weed is adaptable and can survive on almost any nutrient source.
All the relevant COSHE /data / usage charts are provided by Dyofix , so what's the objection?
Any sailing pool / lake etc will just become an eyesore when it's completely overgrown & useless .
Bill