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