Sign of deficiency...

[limsteel]

A few plants are showing some sign of deficient while other not... How?
Slight detail of tank:


3x1.5x1.5 with FL 2x25W & PL1x55W on 10hrs daily 26 - 28 degreeC
Cylinder CO2, at 1-2 bbs via reactor
daily dose Lush gro-Aqua (5drops) + every 3-4 days 5ml of KH2PO4 + KSO4 + MgSO4
Eheim 2215, with BioBall, BioRing, BioSponge & fine filtersponge
Change Water daily 1-2 pails. Tank water used to flush toilet... heheheh!

Fish load: 40 big Cardinal, 5 Black, 2 threadfin, 10 odd Yamato, 5 Oto, 1 Long fin serpae, 10 Pencil, 3 mollies, 1 large SAE, 2 large golden suckers.

Problem:
plant 1 - Alternanthera reineckii ''roseafolia'' - new leaf, Mutant shape. Read from net indicator of Ca deficient.
(establish plant, Stunted - recovered and now same problem)

plant 2 - Hygrophila Donno which Var - Old leaves with pinholes and slowly the hole enlarges and leaf drop off, new leaf OK. According to net K deficient
(planted since start but never able to boost growth)

plant 3 - Lugwigia donno which Var - Leaf colouration very light green... too light almost turning white. generally some other leaves turn brown.
(add to tank for a month, no good result)

plant 4 - Glosso - Leaf edge light green. Coming to the central, dark green... (Establish and growing well, recently downgraded wattage for 72w to 55w)

Fert no enough? or do I need some root Monster!

[victri]

Hi,

Not too sure of your concentration of "5ml of KH2PO4 + KSO4 + MgSO4". Did you add powdered form directly to tank or mix with water first? How much water did you dilute it with?

5 drops of Lushgrow Aqua per day gives you (for 120 litres tankwater. figures in daily ppm. multiply by 7 for weekly ppm):
- NO3 = 0.06623ppm
- K = 0.10773ppm
- Fe(EDTA) = 0.00351ppm

IMO way underdosing. I have the same size tank and I'm dosing 1ml (20 drops) daily and supplement with my own macros mix. You have the Excel calculator for Lushgrow dosing? There's an old thread where you can download it from.

Sometimes K imbalance can lead to symptoms that seem like lack of Ca. I would think it's more of a K and Fe problem. Your Ca and Mg should be very well replenished since you change water so often. 1-2 pails should be about 10-20% right?

Just my own experience, hope the more informed bros can enlighten.