IDOSWED
Member
Hi everybody!
I am having some trouble with keeping my reservoir PH stable. I have "flushed" her twice (with PH-d clean water) since the problem started (few weeks ago) and yesterday, between the res. change, I was going to clean the tank as well, but it was very clean inside and I decided not to stress the roots.
Strawberry Amnesia from Dinafem is sitting in a "Wilma 4" ALONE with 50L tank below 15L pot. It has grown HUGE after the roots touched the water. I have been rising the amount of nutrients step-by-step. Its around day 40-45 of flowering now. EC seems to be rising a little while PH rises awfully lot.
I am using Canna product line which should be PH stable. Yesterday, after the "flush" I put in PER 1 LITER:
Aqua A = 3.6 ml (considered a dosage between normal and heavy)
Aqua B = 3.8 ml (considered a heavy dosage)
Canna Rhizotonic = 0.5 ml
Cannazym = 2.5 ml
Cannaboost = 2-4 ml
Ata Bloombastic 0.25 ml (from yesterday on)
According to Canna Grow Guide the EC total level should be at least 2.0 (2000mS/cm) and that does not count the Bloombastic (high on P). Still my cheap EC pen measures only 1925 mS/cm total EC. Go figure that out. Otherwise the pen seems to be working correctly. My tap water was and is around 265 mS/cm measured with the same pen. I can also measure some small rise in EC levels after the solution has been in the res. for a day or two.
So now to the problem - yesterday evening the input solutions PH was 5.5, but today at noon it was 6.3(ish). WTF???
I use 2 HID lights; one 600w and one 400w.
Daily temps are around +26C and nightly temps around +20C (+18C the lowest)
I use 2 airstones for oxygen. I have a CO2 bag around. Res. temps are around +18-20C. I try to keep around 20-30 liters of solution in the tank once. She drinks around 5 liters per day now. I top the solution with a new mix after she has used up around half of it. So after every two or three days i top the solution with new mix of nutes. Sometimes I add extra 10 liters very soon for the purpose of lowering the PH. Sometimes I just add PH- straight to reservoir. In a few days its usually gone up over 6.2 again
Is it possible that even though my EC pen is not showing any fast usage of the nutes in the solution, my dosage is still too low? The plant looks a 7 or 8 out of 10 to me. Buds swell and are hairy as the 60's.
BUT it has some purple stems (might be strain), some spots from PH fluctuations and some yellowing from the tips of the older leaves and maybe some very small twisting of the top new leaves (might be fast growing)View attachment 4329822 View attachment 4329823 I HAVE GIVEN ALMOST MAXIMUM DOSAGE OF NUTES ACCORDING TO CANNA GROW GUIDE. COULD IT STILL BE A PHOSPHORUS DEFICIENCY?
Bigger lights, bigger plant in a bigger tank = more nutes or even extreme dosage?
Anyone?
Thank You, IDOSWED
I am having some trouble with keeping my reservoir PH stable. I have "flushed" her twice (with PH-d clean water) since the problem started (few weeks ago) and yesterday, between the res. change, I was going to clean the tank as well, but it was very clean inside and I decided not to stress the roots.
Strawberry Amnesia from Dinafem is sitting in a "Wilma 4" ALONE with 50L tank below 15L pot. It has grown HUGE after the roots touched the water. I have been rising the amount of nutrients step-by-step. Its around day 40-45 of flowering now. EC seems to be rising a little while PH rises awfully lot.
I am using Canna product line which should be PH stable. Yesterday, after the "flush" I put in PER 1 LITER:
Aqua A = 3.6 ml (considered a dosage between normal and heavy)
Aqua B = 3.8 ml (considered a heavy dosage)
Canna Rhizotonic = 0.5 ml
Cannazym = 2.5 ml
Cannaboost = 2-4 ml
Ata Bloombastic 0.25 ml (from yesterday on)
According to Canna Grow Guide the EC total level should be at least 2.0 (2000mS/cm) and that does not count the Bloombastic (high on P). Still my cheap EC pen measures only 1925 mS/cm total EC. Go figure that out. Otherwise the pen seems to be working correctly. My tap water was and is around 265 mS/cm measured with the same pen. I can also measure some small rise in EC levels after the solution has been in the res. for a day or two.
So now to the problem - yesterday evening the input solutions PH was 5.5, but today at noon it was 6.3(ish). WTF???
I use 2 HID lights; one 600w and one 400w.
Daily temps are around +26C and nightly temps around +20C (+18C the lowest)
I use 2 airstones for oxygen. I have a CO2 bag around. Res. temps are around +18-20C. I try to keep around 20-30 liters of solution in the tank once. She drinks around 5 liters per day now. I top the solution with a new mix after she has used up around half of it. So after every two or three days i top the solution with new mix of nutes. Sometimes I add extra 10 liters very soon for the purpose of lowering the PH. Sometimes I just add PH- straight to reservoir. In a few days its usually gone up over 6.2 again
Is it possible that even though my EC pen is not showing any fast usage of the nutes in the solution, my dosage is still too low? The plant looks a 7 or 8 out of 10 to me. Buds swell and are hairy as the 60's.
BUT it has some purple stems (might be strain), some spots from PH fluctuations and some yellowing from the tips of the older leaves and maybe some very small twisting of the top new leaves (might be fast growing)View attachment 4329822 View attachment 4329823 I HAVE GIVEN ALMOST MAXIMUM DOSAGE OF NUTES ACCORDING TO CANNA GROW GUIDE. COULD IT STILL BE A PHOSPHORUS DEFICIENCY?
Bigger lights, bigger plant in a bigger tank = more nutes or even extreme dosage?
Anyone?
Thank You, IDOSWED
This is my last indoor grow this season anyway and it should be ready by the beginning of the next month.