I am waiting for unlimited sun ( summer) to run some exploratory trials... see how algae grow under different conditions and continue my BBA testing. Lots of nutrients and light combined with few plants is certainly a good algae growing solution. Algae will grow so much that they acutally lead to nutrient deficientcy in plants.
Now some remarks
No one has proven that the Estimative index dosing scheme,or any other scheme is too much and absolutely, positively, harmful/toxic for plant's and or fish, and or that it will cause algae independent of other variables that they wish to dismiss as they have done throughout several forum's .
Couldn’t have said it better. I would recommend people read carefully Tom’s article on EI, before critising actual EI.
From Tom’s article
This will give an assumed “maximum uptake rate”. This rate is important in setting the upper limit of the needs of the plants. Once the aquarist knows this rate, they can be confident that they are not going to run out of any nutrient at most any lighting variable. This “rate” of uptake or dosing is what is truly important rather than maintaining some static “residual” level.
Those that have no such issues with EI are just ignorant, and is dumb luck that they can repeat their success over and over.
Good thing our medicine also gets lucky time after time and treats us ...Lucky things these medicine thingies
By definition "overdosing" would be bad, but the problem is determining what constitutes an "overdose".
total amount of nitrates
plant mass a
growth rate of the plants.
Do we really want to include plant mass in the equation? I know I don't. At best we are estimating, not carefully determining what is an "overdose".
If you need 5 ppm of nitrates to get good growth of a few stems of Species X, what will you need when you have the tank half full of that same species? If you need 5 ppm of nitrates to grow a few anubias, and crypts, what will you need if you add Hygro polysperma to the tank? If the above is with low medium light, say 40 PAR at the substrate, what will you need if you double the light intensity? It just seems overwhelmingly logical that the minimum needed is a function of many variables. And, I am assuming that you measure your nitrates once a day, not every hour.
says makes the most sense both in theory and in practice. One often sees an aquarium with a few slow growing plants, plenty of light, dosing EI and struggling with algae. It also points out, rightly so, that algae in the aquarium is not a pure function of nutrient levels. If one wants to model algae growth in the aquarium you need to put all the nutrients ( both dosed, env. accumulated, bioaccumulated), light levels, light duration, animal load, plant mass, plant growth rate, plant species, algae mass, algae type, cleaning crew, pH…….
If we had a big enough dataset with accurate measurements maybe we can see what is significant for each algae type and make a multifactorial model to diagnose/run your aquarium
Is it reasonable to propose that a hobbyist runs his aquarium according to such models? I would say NO. It is expensive and unreliable at hobbyist levels. Too many variables need to be controlled. Not to mention catching all the right variables.
but I think they don't belong to this thread.
But stay away from discussing all kinds of personal feelings and life histories here. If you feel you have to tell everyone your own story, please, create your own thread.
These are just examples of the posts that do not belong here!
please respect the goal of this thread, and stay on-topic.
Marcel, I respect your activity in this forum but if you want to have a controlled discussion maybe your personal website or a wiki would be more suitable. If you want to hold an uninterrupted lecture, fine. But don't expect to censor the comments that follow it. Even if somebody decides to post his/hers personal opinions over and over, there is little you yourself can do. Why would one knowingly open a controversial thread and then shun people away from participating? Is it too noisy? Well, it is a forum.
A forum is just that. It is mostly about personal feeling and personal experience. We are here to learn from each other, exchange ideas and knowledge not to be whacked on the head and sent outside the classroom.