BlubAquatics Posted October 22, 2022 Share Posted October 22, 2022 (edited) Hi guys! It's my first time doing a high-tech tank and I need some advice regarding the adequate CO2 concentration for my setup (1 week old). Livestock has not been added to the tank yet.Hardware: Tank: 90x30x30cm (81L) Effective water volume: ~60L Hardscape: Spider wood, seiryu rocks, tropica aquasoil in filter bags capped with ADA sand Lighting: Week Aqua P900 at 30% intensity for 8 hours a day CO2: Too many bubbles to count, but it gets turned on 1 hour before the lights go up and stops one hour before lights retire Filtration: Oase biomaster 350Plants: Quote Background: Pogostemon erectus Rotala macrandra Alternanthera reineckii ‘Rosanervig’ Rotala green Midground: Anubias nana Anubias barteri Anubias nana ‘golden’ Eriocaulon sp Vietnam Bucephalandra ‘green broad leaf’ Bucephalandra ‘velvet’ Bucephalandra ‘kadagang’ Cryptocoryne lutea ‘hobbit’ Cryptocoryne balansae Echinodorus ‘reni’ Staurogyne repens Hygrophila pinnatifida Hygrophila polysperma ‘rosanervig’ Hydrocotyle tripartita Foreground: Marsilea crenata Water parameters: I'm using a cheap pH meter and API test kit to test for pH.Aerated tank water (bubbled overnight) pH (meter): 8.33 pH (API): LR7.6, HR8.4 GH: 8 KH: 8Fresh tank water before CO2 injection pH (meter): 7.67 pH (API): LR7.2, HR7.4 GH: 8 KH: 3CO2 injection pH stats CO2 gets turned on 1 hour before lights go up. So at the 1 hour reading, that's when the lights just start. 1 hour: 6.6 (API), 6.84 (Meter) 2 hours: 6.4 (API), 6.64 (Meter)3 hours: 6.0 (API), 6.63 (Meter) <- weird that API registered such a change while the meter did not Will be updated~Optimal CO2 concentration based on pH drop What I understand is that the optimal CO2 concentration is achieved with a pH drop of 1. But which starting pH should I be looking at? Fresh tank water or aerated tank water? What should be the pH my tank water should stabilize at during CO2 injection hours? Edited October 22, 2022 by BlubAquatics Link to comment Share on other sites More sharing options...
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