any idea why my plants are becoming brittle?
I've got a densely planted 90 gallon. 138W HO T5 lighting, 7 hour photo period. I'm running CO2 (Red Sea kit). Tank's been up and running for 9 months and heavily planted for about 6.
Initially, my plants were doing REALLY well. Then I started EI dosing, and immediately got algae problems starting. So I stopped the EI dosing, and I just dose baking soda (my tap water is super soft with a low KH), trace and KNO3 after water changes. Things settled back down and were going good again. Then my heaters malfunctioned and kept my tank HOT (like 32c hot), which is when I started to lose my plants. They became brittle, leaves grew in smaller etc. I unplugged the heaters, and the temp slowly dropped down to 24-26C (our house is climate controlled). Immediate improvement in the plants, nice new growth coming out of the tips.
Then today, I notice the cabomba I had replaced after sorting out the heat issue (lost all my cabomba when the water was hot), is getting brittle, and my asian ambrulia is starting to do the same.
Here are my water specs (I dosed the tank 3 days ago):
Anyone know what's up?
I'm wondering if this is caused by low phosphates? As I've had a fair amount of green spot algae lately, and I read that can be due to low phosphates...
Here's a pic of my tank