HELP Hard water and Limescale

[duanes]

That ARKA should do the trick..
I would test for kH and gH over time to deteremine how much is needed to get your desired mixture for water changes.
For Asian Arowanas a general hardness range between 1 and 10 degrees gH would be desired.

 

[RealCrix220]

That ARKA should do the trick..
I would test for kH and gH over time to deteremine how much is needed to get your desired mixture for water changes.
For Asian Arowanas a general hardness range between 1 and 10 degrees gH would be desired.

My gH is 10 as it stands from the tap which is fine for the Aro as you mention

The biggest issue I have and the reason I want to lower my harness is the scale is absolutely ruining all my equipment

2 FX6, 2 aspect gyre 350s and a maxspect gyre 330 are needing descaling every 4 weeks and I’m losing power in the pumps and having to replace my tubing every 3 odd months

 

[RealCrix220]

Good morning duanes

so in regards to using RO water ( RO is all new to me ) what would be your recommendation on introducing it into my tank

If i was going to do a 50% ( 350 liters ) water change a week what would you say should be put back as RO and what benefits would this have my limescale issue and the fish

i generally want to learn and no better way then learning from someone that knows

 

[RealCrix220]

to note i tested my PH AND KH and my PH was 8 and my KH was 10 ( that was in the aquarium )

i fill my tank directly from my mains water tap in my kitchen and i only add Seachem Prime

 

[duanes]

If it were me......and I was so inclined, and was going to do 350 L water changes per week
I´d mix 250 l of tap, water and mix in 100 L of RO, and test pH and hardness to see the result.
If satisfactory, ....fine,
But.... if you´d like a lower pH and less hardness, with next weeks water changes try 150 RO to 200 L of tap
and continue until yiou get the resulting pH and hardness you want.

I say this as I was a chemist, because I worked in a water quality lab, but
in my role as a fish keeper I prefer to keep fish I match my tap water, which is higher pH (8.2) and hard.


Although I´d love to keep Uaru fernandezyepezi from the Orinoco, which prefers very soft, low pH water (pH 4 -5) and tanin stained natural water at that,
with my tap water, that would be an exercise in futility.

I applaud your tenacity, I just would not go thru the hastle.