Cogo, yes, I understand your dilemma, however, the "easiest" thing to do is not always the correct thing to do, and the problems with this ease is that the kit is like a bear trap for your mind. You will forever think that they know more than you do.
I understand the risk and that many folks are trapped by "test addiction", i.e. dosing ferts based on daily / weekly testing. I know that many aquarist companies and sellers just messing in our heads in order to sell their products.
However, sometimes it is good to confirm your judgments which are based on aquarium health by doing some tests.
ceg4048 said:
When that amount of light turns on in the morning, you need to have the the dropchecker in the yellow, NOT olive green. This poor CO2 is the fundamental cause of all the symptoms, and I mean all of them, items 1 through 5 that you have described.The cause is exactly as I discussed in the beginning of this thread.
Yes, thanks for that. Now I realized looking in my aqua diary that most of my measurments of PH by JBL PH Test was made after lights down (8.00PM). After turning the light off it is about 30ppm C02 (KH7, PH6,8). I've looked also on drop checker, but it is unrealible because it needs several hours to change color. However, now I see that I made 2 tests at about 4 P.M. (4 hours after lights up) and C02 was like 20-26ppm. So maybe I've got CO2 problem in the middle of the day when I am at work. I will check it out once more and increase CO2 level a little bit.
ceg4048 said:
It really has nothing to do with PO4.
I disagree. Even it is CO2 problem, I had also deficiency in P04 as my test consistently shows in last week. This lack can have something to do with 2 time blackouts, my Pro Soil or my worries about overdosing Po4 (in first month of my aquarium).
ceg4048 said:
The solution is simple;
1. Reduce the amount of light intensity either by changing the bulb to a lower wattage, or by putting something in between the lamp and the tank to block some of the light, or....
I don't want to do that. A month ago I bought 13W bulb and use it for 2 weeks, but nothing changes except HC wasn't pearling. My main aim for now is to grow Hemianthus Cuba and get rid of Rotala and Riccia, which I use only to increase biomas. So I will have a look once more to CO2 level and increase dosing PO4.
ceg4048 said:
I would suggest that you do both assuming you don't have fish or that you can put the fish somewhere else.
I've got shrimps so I have to be careful with CO2.
All in all, thank you for your great advises in this forums. I will let you now if my situation is better.
Best wishes,
Cheers,