Good,
我都唔知道!!
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不過看到Control of Algae in Planted Aquaria By Paul L.Sears, Kevin C. Conlin.
http://www.thekrib.com/Plants/Fertilizer/sears-conlin.html
文中的 conclusions 如下
引言回覆:
Conclusions
Despite the lack of controls on the various experiments, and the inability of the authors to directly measure phosphate in the aquaria, there is compelling evidence to support the hypothesis that all types of algae (including cyanobacteria) can be effectively controlled in planted aquaria by ensuring that phosphate is the factor limiting plant growth. In two aquariums with different volumes, substrates, lighting, and plant, algae, and fish populations, effective control of algae was achieved by enriching the tank water with CO2, micronutrients, trace elements, N, and K. Despite high initial algae loads, these tanks are now almost free of visible algae and have remained so for several months. Furthermore, in the 500L tank it was shown that phosphate limiting was occuring by adding phosphate to the tank water and observing the almost immediate growth of green spot algae and cyanobacteria. It has also been shown in the 160L tank that disturbances to the phosphate-containing substrate result in algal growth if there is significant (more than approximately 1 ppm) nitrate in the water, and in growth of cyanobacteria if nitrate is not present at this level. It is important to note that plant growth in both tanks is excellent, so algae control has not been achieved at the expense of the plants.
也沒有定論,不過我的理解是在比較磷含量low,水草的生長比藻好。重點是用方法(例如加CO2, micronutrients, trace elements, N, and K.)提高水草的生長去減低水中的多出的飬份令藻類減少。