How far up is your new lamp set up mate?
I had those same yellowing issues btw.. for me a combination of heat stress, and underfeeding leading to N deff... doh... (your pH problems might have caused you lockout and given you similar deficincies by the looks)..
2 of mine are still a bit too pale for my liking so I'm going to hit them up with a dose of BN N27... if it works, I'll let you know directly, though it ain cheap for a "one dose solution" - not least as it comes in liters and I bet thats enough for about 10 years
I had those same yellowing issues btw.. for me a combination of heat stress, and underfeeding leading to N deff... doh... (your pH problems might have caused you lockout and given you similar deficincies by the looks)..
2 of mine are still a bit too pale for my liking so I'm going to hit them up with a dose of BN N27... if it works, I'll let you know directly, though it ain cheap for a "one dose solution" - not least as it comes in liters and I bet thats enough for about 10 years