What do you think about 'Aquarium plants nutrient deficiency charts', they are available all over the web, are they:
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- Good and useful to use? (if this is the case then perhaps we need to add a resource, article ... etc. for our forum)
- Bad and can be harmful to use by giving wrong information?
- Useless to use in maintaining our plants and we need to rely on something else? What to rely on in this case?

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