its hard to tell. I dont think so. The Rods food i fed for the last cpl months was left out on the counter but ehhh. It was original, pacific plankton, and eggs.
Ive never had a bad HA problem or battle but have had my run ins. Currently a lil bit of byropsis and cyano in one tank. But like i said, its hard to tell if its from the food or not. IMO cyano, HA, byrposis is floating around in all our water coloums just dosent sprout up or spike in high levels or amounts.
I think my red macro algae and skimmers are striping it all out of the water. The bio pellets make the water extra gunky right before the water get foam fractionized in the skimmers. I havent done a wc in prob 2-3 months now.
Last problem i had was Red flat worms froms somewhere i kno lol.
After i beat them, it was diatom, dynoflagellates, than the dreaded HA all along the back wall of the marineland 120g. Like i said, i didnt fight it just rode it out and did some WCs, tried to balance it out and let it be.
HTHs back to work i go.
-d