Algae questions

ccp2007

Members
Is this brown algae? It started out as an orangish brown and now it's this purply black. My husband was told that brown algae will dissipate under bright lights but all it's done is spread and turned dark. Is this toxic to algae eaters? If so, Is algae eater our best solution? If we scrub it all off will it come back? Is it water conditions?
We also have green algae growing..

Water parameters are:
PH 8.0
NITRITE 0
AMMONIA 0
NITRATE 40

Tank size 75
Filters Aqueon 55/75 & AquaClear 50
Tank mates: 6" Jack Dempsey, 2 Ruben Red peacocks & 2 5-6" Bichirs

Wc done on weekly basis, we use prime, stress zyme and start right for aloe benefit

TIA
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Happily married Mommy of 3 babies, 2 fur babies and 15 gilled babies

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ccp2007

Members
I have looked at several sites and still have not figured out what the black looking algae is. That's the one I'm trying to figure out mainly. My husband doesn't seem worried about it but if it were in one of my tanks, I wouldn't be a happy camper because it's pretty UGLY to look at. Considering his aquarium is in our living room and mine are in our bedroom, I want him (or myself if he won't) to take care of it.

Happily married Mommy of 3 babies, 2 fur babies and 15 gilled babies
 
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