Most plants are doing ok, even some are pearling slightly, except the HC
Here are some other problems:
Rotala's red is fading. As long as they are still "healthy" I'd focus on other more major issues first.
hair algae: remove by hand, just a little bit here and there
diatoms: spot treat with H2O2 once before WC, some of them died off
GDA: scraped off for the front glass, leave the rest for the BN Pleco
diatoms? also the leaf got burnt slightly from H2O2
also, Ammonia finally reach 0 (or less than 0.125ppm) today, hopefully these algae issues will fade away
HC's bad health:
My setup was way too much light: 18W CFL x2 12" above substrate,
made a wooden rack yesterday, for temporary
now 2 light sits 20" above
most plants pearls less now, HC completely stopped pearling
Here's my analysis: due to strong light, HC demand A LOT CO2, but there are not enough -> massive died off + shrink in size + yellowing
and this was the condition right after flooded
I tried to crank up the CO2 as high as possible, but I think I have reach the max; I'm now feeding the CO2 to powerhead, to a degree gas burped out from the powerhead, and Amano shrimp slightly got stressed.
with 4dkh solution
tank water kH is 2 degree
left is when CO2 is on
middle is after I shake the solution for 10 mins (to degas the CO2)
overnight the color turns blue and off chart (AS lower the pH)
approximately pH6.2 to pH6.6, but I don't know how to read the concentration from pH/kH table....
irrc that table is assuming pure water with only CO2 is the only factor affecting pH
Today is day 3 after I lower the light intensity, it seems no improvement for the HC yet.
- keep waiting for recover, give it time
- lower water level, so CO2 concentration goes up (does it work? I'm running out of idea now)
Less visible rotting HC, bottom line the snails are doing good job cleaning
those brown stuff (diatoms?) on leaves keep showing and disappearing
lower water level, theorically CO2 concentration should get higher, but the outflow from HoB hit harder as well... hmm...
the dosing schedule I have been doing:
Day1: 50% WC, 1tsp barr's GH booster, 7.5ppm NO3, 1.3ppm PO4
Day2: .5ppm iron from CSM+B + iron mix, 5ml glut. (skip if shrimp molt)
starting tomorrow, WC will be every 3 to 4 days, will add 2.2ppm K2SO4 with CSM+B too, see if extra K helps(doubtful, but why not try it)
ammonia 0, kh 2d, gh 7d, no2 0.25 (yike... have been 0 in the pass)
change lighting distance from 20" to 18", photo period 3.5-1-3.5 hours
Algae population decreased noticeably, little GDA, very few brown on leaves, very little hair algae. (cleaning crew + ammonia leech/spike has over)
some new grows for most plants;
I don't know how to describe the HC... mixed of yellow poor and tiny leaves, and new small green leaves, very little larger leaves here and there... so I'm not sure they are dying slowly or recovering slowly
Get 12 neon tetras, drip acclimation in progress.
smallest amano shrimp molt again (I hope it is just growing up, more likely a drop in tds trigger it?)
one neon got NTD I guess, isolated; I hope other won't got infected.
no2 dropped back to 0, ammonia 0
a closer look at HC, it seems recovering slowly
I am considering making a internal co2 reactor...
but for a simple setup it seems not worth the effort