The algal spores are subjected to floway {HEAD ~ operating conditions} so as to grow algae forming an algal turf in {TAIL ~ the flowing water} 
The algal spores are subjected to floway { HEAD ~ operating conditions } so as to grow algae forming an algal turf in { TAIL ~ the flowing water }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL