TPN short.

[Nick16]

a little while ago, i read in a post that TPN was short of an ingrediaent. but i cannot remember what it was. im sure it began with p and the second word may have also began with p. (postassium and/or phospate?)

 

[Steve Smith]

TPN is basically trace only, so doesn't have NPK (Nitrogen, Phosphorus, Potassium). TPN+ has trace and NPK so is an "all in one" fert.

 

[scottturnbull]

I think TPN does contain Potassium (K), just not very much.

This is probably the thread you are referring to.

 

[Nick16]

so i really need to get TPN+

 

[Nick16]

on the AE website there is postassium carbonate, potassium nitrate, and potassium sulpahte. which do i need? is there not an all in one? how much should i dose and can it be mixed up in tap water?

 

[Steve Smith]

You're looking at dry salts which are used when following the Estimative Index method of fertilising. Take a look in the Fertiliser section (Not dry powders) for all-in-one mixes such as Tropica Plant Nutrition+

 

[scottturnbull]

It's difficult to answer. How densely are you stocking plants and fish? TPN is probably okay if you have plenty of fish and a fair amount of plants. TPN+ is better if you have little or no fish and lots of plants.

For dry fertilisers, see the sticky at the top of this section, titled 'EI daily methods or PMDD + PO4'.

 

[aaronnorth]

for the all in one solution do you mean this:

http://www.theplantedtank.co.uk/allinone.htm

 

[Nick16]

thanks, i think i am sorted, just need to invest in the lights and co2 and we are ready to begin!