Time for an update I suppose
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I re-scaped the aquarium around the beginning of February. Removing probably 40% of the plant mass and trying to free up some breathing room in the aquarium. I wasn't enjoying how densely I had initially planted, basically creating a "coast to coast wall" across the back half of the aquarium.
I tossed most all stem plants, a couple of crypt species, the tiger lotus...
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I removed all of my LEDs and switched to a 4 bulb 48" T5 fixture. I initially ran 2 bulbs - 1 6500k and 1 Floramax for a few weeks and everything adjusted well. Seeing pearling and just increased plant health all over. Greener and brighter. The lingering nuisance algae seemed to reside even more.
The itch just got worse and worse,
so I added in 2 more bulbs (total of 4) and
swapped out my in-tank glass diffuser for a 30" tall x 2" Diameter Rex Griggs Reactor.
2 6500k and 2 Floramax were on for a week or two, and I started to see minor amounts of BBA and string algae popping up even more across the plants (this time even affecting new leaves).
Being too busy to stare at the aquarium for any length- within one week, things got pretty wicked. BBA all over. Black tufts, and long black and green strings of algae everywhere. It looked terrible. I was considering doing a full clean out and taking it as an opportunity to blow an excessive amount of money on all new plants and another rescape lol
Knowing I have better spent priorities, I started to check off the list.
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I had tested CO2 levels after setting up the Rex Griggs. I did again at this time -
Degassed to full saturation was 1.3 drop in pH. Seeing massive pearling across the entire aquarium 6+ hours a day.
Knowing I have not been greatly over- or underdosing fertilizers, I didn't want to wait much longer to do fertilizer trial and error testing.
Given the recent major increase in lights, I concluded even with optimal CO2 and substantial fertilizer levels, I was just pushing too much PAR into the aquarium (considering all slower growing plants too),
so I reduced back down to 3 bulbs. 2 6500k and 1 Floramax combination.
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I decided to do a
peroxide/excel treatment to "hit the reset button" after making the lighting change back down to 3 bulbs. In my experience, even after correcting the issue, crypts and ferns will hold onto that old algae for months before its entirely cleared up.
Dosed 240 mL of 3% H20 (followed 3mL per 1 gal dose) + wavemakers to full blast for 30 min
Performed 90% waterchange + Full dose of Excel.
Within a day, all the BBA and string algae was red and withering away. Things have perked up since then and we are looking on the up and up. There is still a tiny bit hanging around following the treatment. I will continue to spot dose with H202 and excel.
I'll post a true and recent FTS soon. Waiting to get a good shot at night time with no glare
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Post rescape around early February...
Following around 6 weeks of growth... (photo from mid March)