Aquatic Plant Forum banner
1 - 5 of 5 Posts

13 Posts
Discussion Starter · #1 ·
Hi all,

A week ago started having staghorne algae...

Terrestrial plant Underwater Marine biology Grass Water

Plant Water Mushroom Nature Organism

I read it was due to lack of flow or poor co2 distribution so I installed a power head.
Plant Water Plant community Botany Pet supply

After a week staghorn has stopped growing up but it has appear hair algae (I believe)...
Water Plant Natural landscape Terrestrial plant Liquid

Plant Terrestrial plant Water Tree Tints and shades

Any help/adviced will be much appreciated.


13 Posts
Discussion Starter · #3 ·
Can you provide more information about your aquarium? Lighting, substrate, tank size, fertilizing, CO2, etc.? That might suggest some problem to some of us.
Sorry for the late reply.

Planted date 1/03/2020

230 litres 92x50x50

Seiryu stone and some wood.

Substrate : Help plants

Light: 2 White led lamps, (total 100 Watts and around 11125 lm).
7h per day

Filter jbl 1501 with 2 kg matrix + 100 ml purigen

Water change: Weekly 50%
I use 100%RO water without remineralise as I have seiryu stone and after 12h I get:
TDS 120
Kh 4
Gh 6

Co2 30 ppm during the light period

Fertilising Every day:
2 ppm NO3 (with KNO3)
0.5 ppm Po4 (with PH2PO4)
( K included in the KNO3 salt)
2ml propel
4ml envy
8ml Excel or easycarbo

Other equipment:
Skimmer eheim 350
Auto Dosing pump
Magnetic agitator

Recent changes:

Added Power head circulation pump to increase water flow.
Removal of Sera co2 reactor 500 to increase water flow.
Added co2 neo aquaRio difuser installed.

Due to poor nutrients in the last measure I did before the last water change (no3 2 ppm, Po4 0,3ppm) I have decided to increase 50% of the N & P.

Plant Water Organism Branch Pet supply
Plant Terrestrial plant Natural landscape Trunk Grass
Plant Plant community Organism Terrestrial plant Vegetation

13 Posts
Discussion Starter · #7 ·
So just before the co2 is switched off I have a ph around 6.5 and next day in the morning, just before the lights turn on I have Ph of 7.0

Does it mean that I have just 15ppm so I should increase CO2 level to go near to 30 ppm?

I realised also that when the kh is 3.5-4 the ph difference is 0.5

However as I am getting close to the water change my kh increase until 6 due to the seiryu stone, then the difference is just 0.2 but I put same co2 in the water...
1 - 5 of 5 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.