Mmm, but what else can I blame Caulerpas bad health on then? It's just so strange: when I dont add anything (no KNO3, PO4 and so on) Caulerpa slowly grows - pretty pale in color, but growing. When I add all of the above things, Caulerpa gets deep green, really nice looking, but starts loosing its leaves at the root. Really weird. Wasn't it the kind of thing you Tom observed here:
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Originally Posted by Plantbrain
I've done enough with the PO4. I will say do not add it, even if the tank is packed. If you add a very small amount to a large tank with good growth, that might be alright, but even at 0.2ppm spikes after over aweek, I still have gotten negative responses from some plants/macro's.
I also get diatoms all over the glass etc. But the plants, especially Caulerpas do not seem to like it. The Daysa also lost fine hairs.
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Reef Central Online Community - Adding more nutrients to a nutrient lacking system?