Unlike harder cooked clays, like flourite or Akadama, softer clays will retain and hold far more nutrients.
They are also easier to enrich with macro nutrients.
Still, a DIY Mineralized soil has been done long before APC was even a forum.
Several Brasilian showed ti worked well in higher light CO2 enriched aquarium, but they had no access to KNO3 etc.
So if that is all you have to work with(soils), that's what you go with.
http://www.barrreport.com/co2-aquatic-p ... m+castings
Some on the TPT forum suggest just plain potting soil and mix other items to it.
Still, adding KNO3, KH2PO4 etc to the water column is wise and allows better uptake and transport, offers no problems with algae control either way(we ***know*** algae is not limited by nutrients), you still dose K+, traces, so it's not saving you any work per se.......you still ahve to dose 1-2 things, adding another 1-2 will offer no savings there.
You get better health and longer time frames out of the MS this way.
Some in the "ostrich club" do not understand basic plant fertilization. They insist on not adding the macros, as it's some prevention of algae(it's not), and it's easier(you still have add nutrients to the water column), or that it slows plant growth down(use light, not nutrients t do that). I guess if you wanna do it, that's a fine reason, but there's little sense in riding a bike with a flat tire if you do not have to.
I think many from the sediment only crowd do not like to see water column methods mixed up in their little cliques
🙄
Sort of hypocritical though, they do add nutrients to the water column, everyone does.
Just varying degrees, which matters not to the amount of labor added and algae.
What benefits do sediment macros offer the Wc only person with inert sands etc?
Well, you can forget to dose(who has not done that more than a few times?), and it's much less critical, you can go on vacation and not worry so much about dosing, basically, it makes it easier for you to dose the water column.
The main issue in the past was the myth about algae for MS and for the WC. So the MS folks thought they where limiting algae, but of course, they never tested their theory
🙄 WC folks typically had issues with sediments, so they where not interested either. So bring these two groups together is not always an easy sell.
They you have factions claiming BS on both sides. So little truth or demonstrated examples are shown.
Even less testing and a lot of BS is offered on line to argue based of their own speculation, rather than testing or reasoning through it.
Use critical thinking, plant science to wade through this, I think you'll fine at the end of the day, using both together is a really good resilient method for nutrients, no matter if you go non CO2, Excel./Easy Carbo, or CO2 enriched.
Nutrients, by and large are easy.
CO2, light, less so, but once set correctly, they are not bad either
🙂
Regards,
Tom Barr