oleg@gryphon.COM (Oleg Kiselev) (11/24/89)
In article <3580@quanta.eng.ohio-state.edu> BRIDGE@rcgl1.eng.ohio-state.edu (JOHN BRIDGE) writes: > With regard to low flow reverse flow UGF's, what "hard" facts are >you interested in? What I really want is data none of us can get on our financial and temporal budgets: a table of 12 month results of plants growth and propagation and the nitrogen data for a variety of gravel depths, flow rates and directions and flow methods, with nitial water chemistry, bioload, feeding, plants selection and lighting being constant. Something like this: (rate is in gal per sq. ft., flow is n for normal, r for reverese, kind is air for air diffuser and pwr for powerhead)) gravel | flow | rate | kind | NH3 | Nitrite | Nitrate | growth/month -------+------+------+------+-----+---------+---------+-------------- 1" | n | 1 | air | .... 1" | n | 2 | air | .... 1" | n | 1 | pwr | .... 1" | r | 1 | pwr | .... 2" | r | 1 | pwr | .... 3" | r | 1 | pwr | .... ... etc. That and a set of plots graphically representing the changes in growth and nitrification as the depth and flow rates are varied. There may be some sort of consistent 3D surface that describes the relationship between these factors when all the rest are held constant. But who has the money and the time? Any of you out there reading through aquaculture and sewage treatment magazines seen any research similar to this? -- "No regrets, no apologies" Ronald Reagan Oleg Kiselev ARPA: lcc.oleg@seas.ucla.edu, oleg@gryphon.COM (213)337-5230 UUCP: [world]!{ucla-se|gryphon}!lcc!oleg