I have this query as to what would be the best Nitrogen source to add as part of an NPK solution or rather Macro nutrient solution to add daily to my soon to be flooded tank. This dilemma occurred to me when i consulted the contents of brighty lights and two formulas were given one containing ammonium and nitrate while the other contained just nitrate.
Most studies i have read state that ammonium is used as a N source to produce proteins and ammonium is preferred to nitrate when uptake rates were tested primarily because nitrate reduction back to ammonium requires energy.
My question is this: In view that all organisms use N from ammonium including algae, would adding the solution with ammonium and Nitrate give rise to algal blooms if other parameters such as light, co2, fertilization and flow are adequate??