Reef of Fillory - New 75G w/ 40G sump, lots of questions

[Reef of Fillory]

Hey there everyone, I am newly graduated from College with my Bachelor's in accounting, I am now working as an accountant and have had the opportunity to get into the saltwater tank world. I bought most of my gear/setup from Craigslist.

Videos/Pictures:

Top side of Tank the week of 5/15/17 :
Sump of Tank the week of 5/15/17:
Black Snowflake Clowns settling down for the night:


Feeding of my tank:



Cyano/algae outbreak 5/24/17:



Lights out, removed Chaeto, update 5/35/17:


Bought new ATI bulbs - 2 aquablue special, 2 Blue plus




Questions:
1) I have been battling for a few days what I believe to be cyanobacteria? Also had some hair algae. Chaeto was thinning out and dying, removed it and lights out for two days now. Progress - It seems to be dying off/disappearing, any tips? Do pictures look like cyano?

Found a couple of [pineapple sponge?], and a red thing [not sure what it is]. I've read that sponges are a good sign, what about the red thing?








What I have:
75 Gallon tank
DIY internal "coast to coast" overflow with beananimal
Mag 9.5 return pump, split to two lock-line returns
3/4" bulkheads and pvc fittings
DIY 2x4 stand with 1/8" plywood sides, velcro'd on
Reef octopus BH2000 [hang on back] skimmer in sump compartment
3 stage RO/DI unit
"refugium" with sand [Chaeto died]
MaxiJet pump to BRS dual carbon/GFO reactor

Three powerheads:
1) one with descent output, on front right glass, bouncing off of front panel
2) one with pretty crappy output, on back left glass, pointed towards front left corner
3) one with pretty crappy output shooting across the tank behind rock from left to right

Lighting:
Current Orbit USA LED light with remote
4 bulb T5 lighting fixture
1) ATI Aquablue
2) ATI Blue Plus
3) ATI Aquablue
4) ATI Blue Plus

AUQA gadget titanium hydrofill ATO

~80lbs Live Rock, ~ 80lbs caribsea sand, 40lbs aragonite

Livestock:
2 Black Snowflake Clownfish [bonded pair]
Royal Gramma
Two Bangaii Cardinalfish
1 Peppermint Shrimp
1 Fighting Conch
~20 nasarius snail
~4 turbo snail
~10 astrea snail
2 Tuxedo urchins
1 Black Brittle Starfish
Green Toadstool
Green Hammer
Red/Pink Frogspawn
Red Zoa rock

Plans:
Add Algae Turf Scrubber [after my Chaeto withered away and left chaeto covering pumps and powerheads
Remove GFO, run carbon intermittently
Budget pending, purchase jebao wavemaker pumps [2] to replace current pumps
Budget pending, purchase Apex, Apex JR or Reefkeeper
Budget pending, purchase dosing pumps
Budget pending, purchase Hannah PO, ALK, CA and nitrate checkers


Bonus pictures:

 

[Reef of Fillory]

Question about feeding:

I take one cube of PE mysis, 1 small chunk of Hikari Mysis and one cube of Hikari rotifers [all frozen] and mix them with some tank water. I use this amount of food for around 4-5 days, feeding roughly every day [skip a day here and there]

I also feed pelleted new life spectrum "grow" and "algaemax" food ~ twice per week [around 5 pellets of each]

Am I feeding my fish too much? Too little?

My typical feeding is in the YouTube video above. I have purchased Reef Chili which I am going to feed 2-3 times per week to my three corals directly [not broadcast].

 

[Reef of Fillory]

In the picture of the Bengaii, there are three of them there. My clowns did not show any aggression towards them when they were added, and they died one by one. The first one I found suctioned to a powerhead. The next day, the second was missing, and then two days later the third was missing. I never found the two bodies, assumed that the snails found them overnight.

I had slight ammonia reading after the two disappeared, but it quickly dissipated [I also did a large water change just to be sure]. I feel like my fish source was not a good one for those three.

We [wife and I] decided after visiting a LFS to give two Bengaii's a shot again as they were very active and attentive in their tanks. [the first fish were ordered without a chance to observe before bringing home]

These two are eating ferociously as you can see in the video, and are hanging out on the same half of the aquarium as the rest of my fish.

Had some aiptasia come in on the zoa rock, which i've been treating with Aiptasia-X, and I also added a peppermint shrimp. I hardly ever see the peppermint shrimp around the tank.

We are in the process of listing and selling our house, as well as purchasing a new house so there is no room for quarantine tank as of now. When we get settled in to our next home, I have a 10g which will be set up for quarantine. If/when I catch a PetSmart $1/gallon sale, I am planning to buy a 40g as a quarantine.


Future: We are planning to build a new house in 2-4 years which will feature a 8-10ft long tank [~240 or larger] in-wall tank with fish room.