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Well, here are a few from my 5 footer - approx. 250m litres when full!
Hi all,
Have a look at the "Duckweed Index", it is just a KISS solution to maintaining plant growth without needing to test, and carbon etc. Details toward the bottom of this thread <http://www.apistogramma.com/forum/threads/daphnia.12707/>.
cheers Darrel
It is most likely to be a nutrient and light issue, Pistia is pretty effective at harvesting both parameters.I've had a massive die off of duckweed (Lemna?) in this tank recently This has come about after the Pistia stratiotes has spread a lot. The Salvinia has also died back a lot. Do you know whether Pistia releases any chemicals that will inhibit the growth of , or kill, other plants such as duckweed? I suppose it could be that the nutrient levels in the tank are generally rather low also as the Pothos and the Hydrocotyle are probably taking a lot of the nutrients from the water column. Anyway, just a thought and therefore a question to a botanist as I have heard about chemical warfare in plants before with many releasing chemicals to inhibit others.