Originally Posted by willieturnip
I'm thinking it'd be fun to have a plant only tank and crank everything up to infinity. I have a 15 gallon that isn't doing anything so I might as well (though in that tank the lighting would be up to 7.5 watts per gallon
What would be suggested for such a tank in the way of substrate etc?
I'm chuffed with the find, a lot of fun could (and most likely will) be had with them.
have a read up about using akadama. its a clay based bonsai potting substrate.
or even cheaper, certain types of cat litter capped with gravel.
or for slightly more cash look at eco complete
or for mental money check out ADA aquasoil range and oliver knott nature soil.
10x flow would be a good target number from the filter/powerhead.
have a read up on EI (estimated index) but to sum up.
in a max light situation with a tank full of fast growers with non limiting CO2
nutrient uptake wont be more than,
Nitrate (NO3) 20ppm per week
Potassium (K) 30ppm per week
Phosphate (PO4) 3ppm per week
Magnesium (Mg) 10ppm per week
Iron (Fe) 0.5ppm per week
so if you add at least these amounts per week then CO2/flow is all that you have left to worry about.
dry powders can be bought cheaply to mix your own or just add a "complete" off the shelf fert.
a 50% W/C weekly to remove nasties and thats it.
the addition of some flourish excel probably wouldn't go amiss either. :0)
plant heavily from the outset.
increase light over a period of a time............