Heavy K dosers?

[HiNtZ]

Does anyone dose large amounts of K on a heavily planted high tech?

I've been discussing with a few people some problems I've had and I went down a rabbit hole when in reality I think it was low K all along. Then again, my understanding of low K was <10. The rabbit hole did help immensely with my application of traces though, which was something I overlooked for a long time.

Anyway, if I drop below 20-25ppm I seem to have problems.... of all my plants, my P. Stellatus is the best indicator to a potassium deficiency in my tank & seems to gobble it up.

I checked back on a few dosing recipes from better times and that was when I was adding close to 40ppm a week. Then I got paranoid about K overdose and all that wallop so cut back.

So what do you dose in your high tech as K per week? Has anyone got any examples of these 100ppm show tanks I keep reading about but can never seem to find?

Cheers

 

[Zeus.]

I use TNC dose calculator for my ferts, I like it as you enter the volume your mixing and it tells you have many grams for each, then stick bottle on scales set to zero and add just over what it advises in grams, set to zero add next ( us to lose count when adding teaspoons full as someone always decides to talk when your counting 😡. The ppm it yields for the mix is above ,( Its missing the Epsom salts which I add separately via the TNC ppm calculator.) But the above dose is for 100ml and I dose 150ml ATM so my K will be 54ppm per week, but I have dose as much as 200ml a week at times.

 

[HiNtZ]

View attachment 117099
I use TNC dose calculator for my ferts, I like it as you enter the volume your mixing and it tells you have many grams for each, then stick bottle on scales set to zero and add just over what it advises in grams, set to zero add next ( us to lose count when adding teaspoons full as someone always decides to talk when your counting 😡. The ppm it yields for the mix is above ,( Its missing the Epsom salts which I add separately via the TNC ppm calculator.) But the above dose is for 100ml and I dose 150ml ATM so my K will be 54ppm per week, but I have dose as much as 200ml a week at times.

I actually used the TNC calculator with salts I got in a job lot from someone shutting a tank down when I first started. The salts were from APF. It too came with MGSO4 but I ran out quick, then I hit problems when I didn't use it so added it back. Then I tried all sorts of tests over the years modifying the solutions using Zorfox's calculator which I must say has been a god send.

My problem is that I always assumed I was putting a lot of K2SO4 in with the rest going in as KNO3, it's 1/4tsp of potassium sulfate to get 5ppm in my 155 and it just seemed excessive at the time, so foolishly I cut back.

I seem to have NO3 linger around while PO4, and evidently K too, are soaked up fast - hence why I had to leave the TNC calculator.

Nice to hear that maybe it isn't all that much. I think my problem is seeing these teaspoons of salts going in as a lot but not considering how much the plants actually do use by the end of the week.