20 Gallon Long Low Tech W/ Only Crypts And Anubias How Much To Dose?

[rs18alpha]

I have a high tech that I dose EI.

I'm going to set up a low tech 20 gal long with no CO2.
The only plants that I'm going to use are a few different types of Crypts and Anubias.
I'll be doing a 50% WC every week.
I don't know how many ppm to dose my N P K and CSMB ferts?

I also don't know how many days a week I should be dosing?

Thanks for the help!!

 

[Allwissend]

As you are already dosing EI for the other tank I would suggest dosing the same thing on the same days to the new one. As for the dose, maybe 1/2 of the recommended EI is a good starting point.

You can adjust up or down depending on the plant response. As the biomass increases they will consume more up to a point, but by and large 1/2 of EI should cover it.

Also consult this thread:
https://barrreport.com/index.php?threads/422/

 

[rs18alpha]

Thanks, one more thing. Since this is a low tech I'm not sure how long the lights should be on all day?

If I set up a 40 gal low tech as well can I assume I should dose that size tank at half the EI amount as well?

 

[Allwissend]

Start with 6 hours. You can increase it later and see if you get algae or not. It is also a question of light intensity. If light is too intense even the 6h can create problems. What light do you use ?

You can scale the dosing and get the same concentration. However, adjustments should be made for each tank individually (if you are into that sort of tweaking).

 

[rs18alpha]

I'm using two little clip on LEDs Super Slim White 5730spectrum 36leds So, I would say it's low light.
I want the lights to be over the crypts and I don't want much light over the Anubias.
I have these in a 20 long now and with them on one side and I light the way it looks.

As far as the ferts go. With low light low tech do you think I should still dose macs and mics 3x week?