Sorry my friend but i may have typed in a way that i didn't come across right.. i don't use most of the brands that you are using that are spirulina or veggie flakes so i was unsure of the quality of spirulina and kelp percentages except Ocean Nutrition that i use for my fry..
What happens is that most often most foods for fishes will state they are veggie foods and or spirulina foods with the ingredient of the spirulina and kelp way down the list like you stated above only to find the number one ingredient being fish meal..
Factor in the amount of food and percentage of proteins bloat could be an issue and i believe your correct if a fish comes down with bloat the survival rate is very low, sorry i never had an issue with bloat before so this is all knowlegde from reading..
Back to the foods what i do is use the foods that list the main ingredient as number one for EX. as a spirulina based flake i use the omega one super veggie, HBH 8 veggie, wardley spirulina discs, ocean nutrition spirulina and nutrafin spirulina algae, let me break this into a group..
main uses are listed in sequence from 1 being mostly used by me again this is my opinion only and what i use no way am i saying your wrong.. And i didn't list all the Ingredients just the first couple to point out..
1 Omega one super veggie flakes - Ingred. list (1 whole kelp, 2 spirulina, crude protein 33%)
2 HBH 8 veggie flakes - Ingred. list ( 1 spirulina powder, soy flour, pea powder, alfalfa crude protein 28%)
3 Wardley spirulina discs - Ingred. list ( 1 spirulina algae crude protein 32%)
4 Ocean nutrition spirulina flakes - ( 1 plant meals, 2 spirulina, fish solubles crude protein 48% ) this is very high in protein and is what i use for fry..
5 Nurtafin spirulina algae flakes - ( 1 spirulina pacifica, fish meal crude protein 44% )
this is high in protein as well i use it for fry and juvies..
Along with variables of other feedings like whole salmon flakes like Omega one cichlid flakes and NLS pellets/flakes for cichlids with frozens and live foods if heavily fed could pose an issue i use all of my foods in moderation to where i am using a certain amount of food a day and alternate between days with a total different food to break up the routine of just feeding a certain food and only in small amounts.. i do not use all these foods at one time for a feeding.. they are broken up in groups at different times of the week..
Don't take me wrong i am not saying your foods are not good i wouldn't do that to you and this may be a totally different issue but when you said what appeared to your fish symptom wise, a little change to see if the fish could bounce back is all.. and i do understand your mixing your foods up as well..
Fish autopsy cool deal my friend your awesome aye.. well at any rate i didn't mean to confuse you at all my friend i hope all is better soon.. take care..
