Nice set up. 2 thoughts the 20 liter containers look like they are being stored 6 ft off the ground. Could be an opportunity to spill on someone while taking down unless there is a ladder and they could be leaking on the equipment below. 2. It might be a good idea to have a splash shield in front of the 275 tote. If that camlock leaked or broke off, the bleach would spray clear over the edge of that container below it.
Good idea on the splash guard, The guys have a mobile ladder platform for loading and unloading the racks and the cam lock has a stainless wire trace that only allows the cam lock to move about 5mm if it breaks, very similar to what you see on high-pressure airlines to stop them swinging around and hitting someone if they burst.
The full name is benzyl quaturam ammonium chloride . Its a commercial grade algicide, once sprayed on the roof it takes around 12 weeks for the roof to be spotless and it sticks to the roof and keeps it clean for around 2 to 3 years. We offer the clients 2 options, 1 a full roof wash and 2nd is we treat the roof and a treatment is about half the cost.