Hello everyone 
I started small aquarium, here are the details
Aquarium : UNS 45U 9 45/28/28
Concept: Pure Dutch ( no hardscape )
Equipement / Technical Specs
Soil: 2HR Aquariust APT Feast+APT Start
Filtration: Eheim Classic 250 ( Main ) / Ehem Skim350 ( Surface )
Light: Chihiros WRRGB 2 30cm
Water: RO ( pure )
Co2: Co2Art Dual stage regulator
Plants
Front: Pogostemon helferi, Rotala Indica, Staurogyne repens
Midground: Ludwigia repens x arcuata, Rotala Macranda mini type 4, Alternanthera Reineckii mini
Background: Rotala rotundifolia Green, Rotala Wallichi, Rotala Orange Juice
This project was started on 01/01/2026 and the main idea was small Dutch tank just to be able to play around with something until I wait the hardscape for mine bigger tank to be delivered...
Even i know that Dutch in small space like this will get tricky I decided to give it a go.
The soil is 4cm at the front with 9cm at the back.
Eheim Classic 250 filled with Eheim Mech ( 1L ) , blue coarse sponge, Seachem matrix , extra blue sponge and Eheim fine pads at the top ( in that order ).
This time I was smart enough to use double taps in order not to cry when I clean the canister.
On day one i did mistake, I used the APT Start even tho on the instruction manual it says DO NOT PLANT IN THE NEXT 2 WEEKS...yeah who read instructional manuals...never mind wasted but ok. I guess I learned
Co2 starts at 14:00 and turns off at 21:00, light starts at 16:00 and turns off at 22:00.
Co2 is set up for 2.5-2.7 bubbles per sec if that is some info
Chihiros WRGB 2 is set up on reds 80%, green 35% and blue on 55%
Light period is 6 hours at the moment.
Water is pure RO at the moment just to wash out the extra of everything.
On the last measurements KH was 0 and GH was 4
This is something I need to do in the next few days cos I'm not 100% did i measured it right.
In the first week I do water change 50% everyday, second week once on two days, third week , once on three days, forth week and on i plan to change 50% once per week.
The current TDS before water change is 140-50 and after water change is 70-80
Once this gets lower I will do remineralization with Salty Shrimp kh/gh+ or I might do just gh+ with Masterline.
Water temperature is 24C
I don't plan to add any livestock at the given moment, most likely I'll wait 2-3 months.
I started small aquarium, here are the details
Aquarium : UNS 45U 9 45/28/28
Concept: Pure Dutch ( no hardscape )
Equipement / Technical Specs
Soil: 2HR Aquariust APT Feast+APT Start
Filtration: Eheim Classic 250 ( Main ) / Ehem Skim350 ( Surface )
Light: Chihiros WRRGB 2 30cm
Water: RO ( pure )
Co2: Co2Art Dual stage regulator
Plants
Front: Pogostemon helferi, Rotala Indica, Staurogyne repens
Midground: Ludwigia repens x arcuata, Rotala Macranda mini type 4, Alternanthera Reineckii mini
Background: Rotala rotundifolia Green, Rotala Wallichi, Rotala Orange Juice
This project was started on 01/01/2026 and the main idea was small Dutch tank just to be able to play around with something until I wait the hardscape for mine bigger tank to be delivered...
Even i know that Dutch in small space like this will get tricky I decided to give it a go.
The soil is 4cm at the front with 9cm at the back.
Eheim Classic 250 filled with Eheim Mech ( 1L ) , blue coarse sponge, Seachem matrix , extra blue sponge and Eheim fine pads at the top ( in that order ).
This time I was smart enough to use double taps in order not to cry when I clean the canister.
On day one i did mistake, I used the APT Start even tho on the instruction manual it says DO NOT PLANT IN THE NEXT 2 WEEKS...yeah who read instructional manuals...never mind wasted but ok. I guess I learned
Co2 starts at 14:00 and turns off at 21:00, light starts at 16:00 and turns off at 22:00.
Co2 is set up for 2.5-2.7 bubbles per sec if that is some info
Chihiros WRGB 2 is set up on reds 80%, green 35% and blue on 55%
Light period is 6 hours at the moment.
Water is pure RO at the moment just to wash out the extra of everything.
On the last measurements KH was 0 and GH was 4
This is something I need to do in the next few days cos I'm not 100% did i measured it right.
In the first week I do water change 50% everyday, second week once on two days, third week , once on three days, forth week and on i plan to change 50% once per week.
The current TDS before water change is 140-50 and after water change is 70-80
Once this gets lower I will do remineralization with Salty Shrimp kh/gh+ or I might do just gh+ with Masterline.
Water temperature is 24C
I don't plan to add any livestock at the given moment, most likely I'll wait 2-3 months.

