BBA in Low Light tank

[dw1305]

Hi all,

How often do you need to fertilize your tanks (more or less....)?

Less and less frequently. I don't know why.

do you think plants are they obtaining the nutrients from the substrate/mulm's nutrient breakdown?

This would be my suspicion.

And what about your water changes? I think you change a small volume but quite frequently, isn't it?

Yes about 10% a day, more for the smaller tanks.

I'll take some photos, but the 60l tank in the kitchen has been largely undisturbed for about 5 years. It has quite a thick layer of fine sediment in the areas with low flow, and over time all the gravel (the substrate was about 90:10 sand:gravel) has migrated to the top of the sediment in the other half of the tank. I haven't fed it at all for the last year, and it is basically full of plants.

cheers Darrel