crazy loaches wrote: ...
That is a lot of algae though! But I agree, sounds like diatoms. I wonder what would have triggered them?
My plants seem to absorb all available Nxx fairly fast. Additionaly my bio-filter may convert some (in some very slow flowing corners, where I never clean on purpose) as well. During my beeing away, for 7 days, I installed a prototype fertilizer “dropper - bottle”. Means I put a plug in a thin hose and positioned a 1.5liter Coke bottle higher, so the fertilizer liquid keeps dropping into the tank over the days. That worked fine during the test days, but while being away it stopped, I gues on the 2nd day, most likely it plugged up. So, the lack of available nutrition for my big plants, may have left too much opportiunity for the diatoms. The diatoms themselves come from the tank glass, where I scrub them off via magnet. Thus much of it may float to the surface and settle there even better than on the glass. An option may be to scrub the diatoms off with filter-cotton, this way more of it stais caught. Additionally to that my CO2 bottle runs low again and less bubbles are created (need to get a bigger one).
I will take out the diatoms today or tomorrow, and will add a new mix of fertilizer…I´m trying to figure out a way with non aquaristik fert´s as for the future big tank, the aquaristik ones are too expensive.
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But I've seen this only one time. Thanks for this!