Green algae issues

[Richard40]

No, I’ll do the PH check tomorrow and post the results.

 

[Richard40]

Right here are my results

CO2 on at 12.30 - 7
1 - 6.65
1.30 - 6.45
2 - 6.37
2.30 - 6.41
3 - 6.3
3.30 - 6.23
4 - 6.21
4.30 - 6..15
5 - 6.14
5.30 - 6.14
6 - 6.18
6.30 - 6.25
7 - 6.16
7.30 - 6.19
8 - 6.09
CO2 off 9 - 6.23
9.30 - 6.26
10 - 6.42

 

[Zeus.]

Lights on/off times?

6.30 - 6.25

Bit of an increase in pH 😳

 

[Richard40]

Could have been a reading that took a while, some the egg timer went off after a few seconds, sometimes it took ages.

Lights on is at 16.15 and off at 22.15.

 

[Zeus.]

So if we say the 6.30 - 6.25pH was an possible error, the pH profile looks pretty good to me.

Rinse repeat OFC to check again well worth the effort IMO. I would take the pH at 4.15 (lights on) as well, the other times dont need to be spot on but lights on is important IMO as thats when the plants kick start photosynthesis

what timer device are you using to control the CO2 on/off time ?

What was the DC colour after lights had been on 2-3 hours?

If the pH reads a different pH on next pH profile dont worry its the change in pH in the profile we are interested in not the pH reading itself, as the pH probe may off gone off a little overnight 😉

 

[Richard40]

Are you saying do it every half an hour again or just at 16.15?

I'm using a Kasa plug that's operated via a schedule on my phone so it can be controlled easily.

Drop checker is a lime green after lights had been on 2-3 hours.

 

[Zeus.]

Are you saying do it every half an hour again or just at 16.15?

well I would do it at quarter past the hour and quarter to the hour so it works with your lights on time, after doing the pH profile a few times and getting it fairly stable, I just went for lights on time and just before CO2 off

Drop checker is a lime green after lights had been on 2-3 hours.

 

[Richard40]

O'k I'll do this again tomorrow and share the results. If it's stable would I be able to increase the photo period and intensity?

 

[Richard40]

Ok, so second time round

CO2 on at 12.30
12.45 - 6.97
1.15 - 6.87
1.45 - 6.77
2.15 - 6.63
2.45 - 6.53
3.15 - 6.47
3.45 - 6.39
4.15 - 6.36
4.45 - 6.36
5.15 - 6.32
5.45 - 6.32
6.15 - 6.32
6.45 - 6.32
7.15 - 6.3
7.45 - 6.3
8.15 - 6.28
8.45 - 6.27
CO2 off 9
9.15 - 6.26
9.45 - 6.36
10.15 Lights off - 6.53

 

[Ghettofarmulous]

Hi Richard. What ph meter are you using?

 

[Richard40]

Hanna PH checker. Got one on eBay for £38 with postage

 

[Richard40]

after doing the pH profile a few times and getting it fairly stable

Now it seems stable and been doing two 50% water changes a week. Shall I up the lighting to 7 hours and 70% or leave it?

 

[Zeus.]

Now it seems stable and been doing two 50% water changes a week. Shall I up the lighting to 7 hours and 70% or leave it?

Has the pH been stable of at least a week ? and present intensity ? why increase the photoperiod? plants have had their fill after 4-5hours of high light

 

[Richard40]

I’ve not changed the CO2 for over a week so it will have been stable. Light is at 60%, so I should just leave it?
Just read should work up to 8 hours a day and each week move the intensity up 10%.