0 Nitrates and Gha

[Randy Holmes-Farley Verified Community Expert]

What type of iron would you recommend? And is there a test for it?

I would not recommend dosing enough to detect with a kit, since they cannot detect anywhere close to natural levels.

I recommend a DIY for iron:

Buy Fergon iron tablets from the drug store.
Put one pill in about 25 mL fresh water (volume is not that important since dose is not that important for iron). Let it soak for a while or overnight until the tablet breaks apart.

Swirl it to mix. Let is settle overnight. Then use the clear greenish liquid.

Dose about 1 mL per 100 gallons once a week (dose is not critical).

 

[RobertP]

Your readings test the water but the gha is already consuming what it can. Setup a siphon into your sump and rip and suck out the gha. I used nopox to kill mine off.
Also my algae blenny LOVES gha.