I would just say you may not need to dose phosphorous for awhile until it drops down a bit, but no it shouldn't an issue. As Tom would say, he doses a bunch all the time as per EI and it's never caused algae.
HAHA yea. I didn't dose any today and a water change comes tomorrow.
I would kit the nitrate up to 5 - 10 ppm, and just stop dosing phosphates until it comes down below 3 ppm or so.
I put in an extra 1/4 tsp in today so we'll see how it goes.
I wouldn't worry so much. Check your water source and food also if you want to find out.
Plants fix their own P with the help of ectoenzymes and such at root level. So as stated above, you may be getting enough with those and can skip dosing.
There is no problem with high phosphate IME.
I have to check my tap water yet. I forgot to test it yesterday so tonight or tomorrow I'll get it tested.
Did you calibrate the kit with a known solution? That's your first step.
I did not know I needed to calibrate it...maybe that's my problem?
If you really have 10+ ppm of phosphate in the water, each water change drops that by about 25%, assuming your tap water is not the source for the phosphate. After 8 water changes, 8 weeks, you would be back down to 1 ppm of phosphate, with no consumption of phosphate by the plants and no dosing of phosphates.
If the plants are growing as fast as they should be, given the very high light you have, they should be quickly using up the phosphates you are dosing. But, you don't have nearly enough CO2 to allow them to grow that fast. Something isn't fitting right here. Exactly what light fixture do you have, and how far above the top of the tank is it?
I'll keep an eye on what happens after water changes to see what happens with my phosphate levels. It could also be like jcgd mentioned about calibrating the kit. I'm going to look into it.
I just recently upped my lighting from using only two of my lights to using all 4. The reason I'm only running 1-2 bps is because my PH dropped like crazy to around 6.2 so I cut it back a bit. This was also when I was only using 2 bulbs though as well. The light isn't the greatest quality. It's an Odysea fixture so the reflectors aren't anything as the nicer fixtures. It came with the tank when I bought it. That's the reason I have it. The light is just sitting on the tank so it's only about 1"-1.5" off the top. Since upping the light my growth has increased and the pearling has gone crazy at night.
The only way I could see you not co2 limiting is because you are limiting nitrates, and/or the plant species you are keeping have very low co2 requirements. Regardless, it seems you may be walking a tightrope or just plain lucky with the balance you have going and no algae.
So if I up the nitrates I should up the C02? Is that what you are saying? Again as mentioned earlier, I am afraid that my PH is going to drop like crazy again.
Depends.....too much of any one chemical can cause your plant having difficulties to use another. I generally keep my level around 5 to 10. Since your kit only goes up to 10, you can't really know how much phosphate you have. I would avoid using any additives containing phosphate. Test your tap water for the phosphate level too. I use Phoslock on my treated water to remove any phosphate as much as possible, down to 1 or 2 ppm. Then, I would add additional phosphate from EI (about 3ppm).
I am ceasing all usage of phosphates for now until I get this whole test kit figured out just in case. We shall see how it goes.