for the small holder farmers, whare growg outside,t might be quite difficult for them to ha such a system. but for those who have the capacity, it will be a good solution, because it cuts down on their cost, but at e same time it is also good for the environment. reporter: there don't appear to be any toxins leaking into lake naivasha. but oserian is only one of many flower growers in the area. and we aren't alloweinto the others. 's also prty hard to pinpoint just where the pollution is coming from. the fler indusy says sll hold farmers areo blame. like potato farmer paul kimani. so what ishe solutioto the pollution? farmers are offered advice on sustainable practices by an organization headed by kamau mbogo. he also wants to know why the lake iconstantlyeing polluted. ul: the faers withinhis area are ung fertilirs. and that cnot be avoed because ofconomical atus. theyave tomprove the rvest evy season th: theris a l of gap beeen the chnologyhat is avlable inhe big fms and whathe smallcale farrs are doing. and also the kind of advisory they get. because even when he has a problem with his