haiphan02

Setup:

1.44WPG, CO2, and dry fertilizer, 8hrs of light per day (6pm-2am)

Photos were taken 5 days after a WC.

What is my problems?

haiphan02

I just bought another fixture today, so after tomorrow, it will be up around 3WPG. So should i lower the hours my lights are on now?

sandeepraghuvanshi

It looks like BGA, which is a cynobacteria.
Start dosing with Flourish excel, it helps in controlling BGA.
Is your co2 setup pressurised or DIY, inconsistent co2 often results in algae.
How old is this tank and what is bps of CO2

haiphan02

co2 is pressurized with a PH controller, set at 6.8. BPS = 3. (its a high tech plant, i'm just a noob and don't have it setup right)

Tank is old, 6months. The previous owner had it set perfectly, I can't seem to get it back to its old glory day as seen here:

fishyjoe24

what size tank, and what size canister filter? also what are you using for flow/ circulation...

haiphan02

Tank size: 75 Gallons All-Glass Awuarium
Filter: Eheim 2260 (non-Classic version, compare-able to Fluval FX5, good up to 400 gallons tank) is connected to clear inline reactor
Lights: Dual Glow T5x54w with Giesemann bulbs
Water Flow: Powerhead with sponge attachment (forgot brand)
CO2: Concoa dual stage CO2 regulator, 5lbs CO2 tank, Milwaukee SMS 122 ph meter,
Heater: Hydor ETH 300 In-Line Heater, another 300W in tank heater (forgot brand)

Currently:
WPG: 1.44 WPG, 8hours of light per day (6pm-2am)
BPS: 3
PH: steady at 6.8 - 7


Below are old pics from prev. owner, same equipment i'm using now. EXCEPT: i've added more water flow via powerhead

wwh2694

Take out the ph controler. I used those before and it makes it more troublesome. It tends to make ur co2 low even when ur ph is low arleady. U need constant co2 tru out your lighting period. I see u got discus. I had 5 big discus before and they require hotter temps for them not to be sick and those hot temp envites alot of algae. Planted discus is nice but hard to managed. U need more co2 to prevent those hair algae. To kill those algae i use hydrogen peroxide or excel squirt it directly on the algae with ur filter off. Or u can just remove the plants that have an algae.

digital_gods

Before we get too engrossed into the fine details, lets backup to the basics. The basic requirements for a plant to grow is: light, nutrients and carbon source. We know your lights on a 8 hour period. To much lighting isn't the issue. Your using co2 for your carbon source. We know it isn't too much because your fish are not gasping at the surface or dead. Now not enough maybe. Inconsistent amount that is causing ph swings, maybe. So that leaves us with nutrients to examine. You said you fertilize, what do you use, how much and how often? Water changes, how much and how often? Cleaning the filters, how often? Have you tested your Nitrates and Phosphates. My guess, it could be possible excess of nitrates, phosphates or dissolved organics. Look into those areas before dumping chemicals into your tank giving that delicate nature of the Discus.

Seeing the last photo, you might have excess zip ties causing the issue.

Newt

Looks like hair algae and BBA to me. Too much iron and phosphate, unsteady CO2 levels, low MgSO4 and maybe low nitrate.

digital_gods

You can use a tooth brush to brush the hair algae out of the grass. What city are you in? If your near my route I commute, I'd be willing to pickup a water sample and test it for you.