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[APD] EI approach with liquids
I have planted 100 G discus tank that gets fertilised EI style .The sheer
volume of plants takes away most health issues. Discus are less ill and
skittish than Bare Bottom tank. Because I feed beefheart twice a day ( 5
full grown discus , plus a bunch of tetras and corydoras) , I don't feel
the need to dose PO4 very frequently , Plants keep growing wild on traces
and KNO3 , a lot of KNO3 , I predissolve known quantities using chuck
gadds calculator, then I poor twice week with a TMG dosing flask , I just
poor it in before the filter overflow . CO2 used to be Ph regulated , too
much messing with the probes made me switch to CO2 regulated by clock (
one hour offset with light timer ) . I am sure I had too much CO2 at some
point but never had any problem with it. i think the plants really suck
out the CO2 and oxygenate the water to pearling .
Have tried common household fertiliser , injected before filter intake (
huge bio sump, sealed ) , got lots of spot algae , dark discus , duckweed
attack . The plants were growing like crazy but so were th spot algae on
my 5 year old anubias backwall, Had to trim and start growing clean leaves
again . Since I switched back to KNO3 no more issues. Just to show that
Tom has a point with his stated effects of KNO3 versus oher nitrogen
compounds.
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