don't just add an aquarium plant fertilizer, even if it says "fish safe" it may be safe for fish not meant for consumption.. read up on what is contained in anything before you add it..
maxicrop with iron is made from seaweed, and is safe for fish that will be eaten
Sound advice. Maxicrop is pretty darn expensive though, but again if money isn't an issue, that's a good way to start.
i bought a quart of maxicrop for under 10 bucks last year, and still have a bit left, using maybe a cap full every few weeks to once a month
even used some on the dirt garden last year as a foliar spray (diluted)
I added 12 more goldfish. Also after reading another post on here used steel wool under my incoming flow to growbed. About 3 days later plants are greener and the new leaves are very dark green. Also seems that they growing much faster now. Ph is maxed out on test scale so added some ph down for fish ponds. Still high Im guessing 7.6 from a little lighter shade of blue in the test vial now. Ammonia levels are still 0 - .25 on test scale so good there.
sounds like you're coming along.. go easy on ph adjustements, a big change will stress your fish..your system's ph will come down naturally over time..