Again, thanks for all the help.
I ordered the Shrimp GH+KH minerals and they arrived today and did a 20l water change.
I plan to do 20l on Saturday and 20l on Tuesday when I'm off, so that'll be over 100% water change.
If my tank stats come back o.k, I might finally look into getting some shrimp next week.
It is definitely more of a balancing act when trying to keep everything happy in a tank with Shrimps and plants, but don't be put off I think you will be fine. When putting the shrimps in the tank you should take hours of dripping to acclimate them and you may lose a few with the low Ph but I am sure it will work out in the end as cherry shrimps are fairly tough. If you use all RO water and GH/KH+ then the PH will always be lower even after the buffering of the soil stops, but this is the easiest route to go! If you go the mixed water 1:3 with GH+ the same applies but the PH will be slightly higher and will be cheaper (less GH+ and RO water needed), so overall this is the way I would go, and it isn't all that complicated once you get it up and running!
As with JayC I doubt you really will need any ferts but if you must then use a lot less than the packaging recommends!
The best thing to do is just decide which route you prefer to go from the start as it gets so much more difficult to change it later? I don't have any issue with keeping shrimps/fish/plants happy and I don't use CO2 or any fertilizers so it is definitely possible and not that difficult if I can do it? I think that a lot of the plant fertilizers etc are really intended for plant aquascapes without any inhabitants but with fish and/or shrimps there will be natural fertilizer and the soil should have enough to start everything off?
If you still aren't too sure I would just try running the tank without the CO2 or ferts (with the exception of as JayC recommends above) for a few weeks and just see how the plants get on, as you can start using either/both again at any point if they don't look like they are ok, but I expect it will work out fine. This will also give you time to mull it over at leisure?
You only need Flourish Potassium, as needed, in an aquarium. Potassium will be the limiting factor to growth in most aquariums. But with shrimp in the tank, I would dose it at 1/4 strength once every 2 weeks or more.
Seachem Flourish for micro nutrients at half recommended dose every other 2 weeks in between the Potassium.
I don't believe you will need too much ferts in your tank. The type of plants and the amount of plants do not warrant much ferts at all.
The waste from the fish and shrimps will be enough ferts, and if they are getting enough light a day, the plants will be fine without any additional ferts, except maybe a little potassium once every few weeks.
Not going to lie, this is giving me a headache.
Just want a nice planted tank with fish and shrimp. 🤨
At the moment it looks like it have to either pick 1 or the other.
Would this be a solution.
Use Seachems Equilibrium and KH products to bring my GH and KH up to 4, then use that Shrimp King Mineral Fluid Double, to bring the GH up to 6.
That would make sure that there are at least some minerals for the shrimp.