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Re: [APD] Aquatic-Plants Digest, Vol 28, Issue 12

Hi Raj,
  This sounds alright but is not all of the issue. 
  I can have huigh nutrients and low light and no algae.
  That is actually one of the most robust methods to prevent algae.
  Low light, high CO2, high nutrients. 
  But......what type of nutrients? If it's all from high fish load, then  you will likely have algae, but you can avoid that by doing large water  changes or 2x a week.
  Many Discus folks fall into this group.
  But as far an adavntage of plant growth vs algae growth, CO2 enriched low light tanks are clearly highly successful over time.
  They have a wider range of nutrient levels before perturbations occur than a high light tank.
  You might be wasting the nutrients(but they are cheap) if they are high  in a low light tank, but it will not cause algae in and of itself.
  Better to waste a little nutrient than run into limitations and have a higher rish for ugly stunted plants/algae presence.
  Take your idea with CO2. In lower light tanks, 15ppm might do, but  30ppm will be much better, more robust, more optimal.The same is true  for the other nutrients, it affords more flexibilty in a person's  routine + provides more wiggle room with errors. Adding more light  makes these upper ranges more critical, but at low light + experience  with high light allows us to really provide even a better cushion for  the balance.
  Tom Barr 

         What I am trying to say is that if there is more nutrients there
should be more light till one of the two limits plant growth.


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