Your solutions for the macronutrients and resulting targets are fine if you do 1mL doses, but that is difficult without a pipette. Instead, consider diluting the solution to give a nice, easy to measure dose, like 5mL/tsp. For example:
(I am calling your 25gal tank 20gals of water after displacement of substrate and sutff)
75grams KNO3 in 500mLs = ~15ppm NO3 per 5mL/tsp dose
16grams KH2PO4 in 500mLs = ~1.5ppm PO4 per 5mL/tsp dose
Do this three times a week and you are well past your potassium target, but still add K2SO4/potassium sulfate if you'd like. Better to dose to these levels or higher when starting, which helps keep algae away while you learn dosing and nutrient uptake.
The other option is dosing dry, which Chuck's calc and the fertilization sticky also covers.
I saw that the Iron Chelate is to support the iron in plants which apparently is pretty important and not usually made up for with other ferts. I did see Plantex csm+b plus iron mentioned here but didn't see it on the site, would that suffice?
The CSM+B+Extra Fe is an old experimental mix from Greg Watson that is no longer available. CSM+B has plenty of Fe though, and you can skip the Fe chelate. If you are the experimenting type and think you'll want to mess with Fe alone later, then it is wise to pick it up now.
What is the magnesium sulfate for?
Magnesium/Mg is a critical micronutrient but you likely already have it available in tap. If I were you I'd skip this. Later if plants show Mg deficiency or you have reason to believe Mg is too low, it is easy and cheap to pick up MgSO4 as Epsoms Salt at the 99 cent or grocery store. Saves on shipping cost, too
Also what kind of ppm are you looking to hit with your micros or is that just an every other day supplument that has instructions on the box?
Your target is .1-.2ppm Fe, which also serves as a proxy for everything else in CSM+B. You can go higher or lower, but this is a good range to start with.
Here is a CSM+B solution calculator. Like Chuck's online calc you can measure dry dosing by entering 1mL of water for the trace mix and a 1mL dose.
You dose every other day but not at the same time as you dose PO4 (they can form a percipitate and fall out of solution).
also am I understanding the dosages right with the amounts I put up? If it is right when do i dose? when there are no nutrients left? when they get under my "goal" ppm? or on set days?
You understand it fine. I only suggest diluting your mixes so you have easier dosing and less of a PITA.
You can handle dosing one of many ways, but here's two:
A) Dose the macros above three days a week, every other day, say MWF. Dose the micros on the "other days," say Tu, Th, Sat. Do a 50% water change once a week so nutrients do not run away from you. Only test if you're curious. This is
The Estimative Index.
B) Do a 50% water change and dose to the target range of your post. You'll test NO3 and PO4 three or so times a week and dose to bump their levels back to your targets. (Trust the dosing levels from these calculators more than your test kit to figure out how much to add.) You still want to dose micros several times a week, and there is no reliable test for them, so just do it blindly according to the calc and your targets. Again, continue to change water on your schedule for the fish and to ensure the nutrients stay balanced.
With A or B, you'll still use algae and nutrient indicators in plants to figure out if you need to tweak your dosing/targets. We will of course help with this.
Excellent questions. You're going to do great.
HTH,
Joe
