Today the Cryptocoryne parva turned up so I put those in the right hand side foreground.

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Excuse the crappy pics.

I have got a little biofilm on the wood that sticks up in the middle of the tank now, but that's the only place I can see any and there isn't much.

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There is also new submersed growth on the Limnophila hippuridoides now.

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The tank is still quite cloudy and brown but everything is looking good. I think the cloudiness is maybe 10% better than it was yesterday. There's still no sign of any algae. One Cryptocoryne hudoroi leaf melted but that's half expected.

It's been a little weird with the CO2 and pH. After the pH didn't stabilise until around 2pm yesterday I started the CO2 an hour earlier today (8am) but today the pH didn't stabilise until 3pm, 2 hours after the lights were on full.

In order to have the pH stable by the time the lights come on I'd now have to turn it on at 6am, 7 hours before the lights are on full! :crazy:

I am guessing that because the CO2 injection is on the low-medium side (for the size of the tank) it is taking longer to build up to the level where it stabilises.

Is there any CO2 experts here that can advise? Do I still need to get the pH stabilised for the time the lights come on or is it less likely to matter in my case, with the low-medium background level of CO2 dosing and mostly low energy plants?

I've also had another play with the Gyre pump and it's now on an alternating flow, around 90 seconds ramping up to 50% forward flow then 30 seconds ramping down to 100% reverse flow (reverse flow is weaker for some reason) and then ramping up again.

The alternating flow is better as the reverse flow unsticks any plant leaves that have got jammed in the back of the Gyre, it gives a bit more flow to the bottom plants at the right side too and it adds flow underneath the wood 'cave' I created on the right.
 

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