trelmix... good or bad?

Eish .. now you making it real hard ;-) Potting soil - source of material etc make is almost impossible to give you any direction. Well that is not 100% true ... your only real way is either loads of testing equipment or do a reduced EI for a while and flush what it not needed.

A 3'rd option is observation - this is tricky, but in short you dose what you see are deficient in your tank and this is a totally different type of voodoo.

Most newly planted tanks should not get any firtz for the first few months - well that is the theory esp if your plant need to transition.

Later Ferdie

 

ok now I understand... do a lean dose, 50% water changer and test regularly.

so sorry for picking brains.

I'm a newbie after all

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Pick brains
Especially f fish

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he he ... all good, it is very hard to get brain pecked - since most of the time one has very little idea what the OP has already done / experimented with .. so slow slow and all is good.

Later Ferdie