Zoas and gsp not growing but anemones and leathers are happy and growing fast.

[Moist153]

45 gal tank I've had for years, started to add coral 2 years ago but zoas and gsp aren't growing like they should, nems and green toadstool leather are huge happy and healthy.
I feed reef roids and mysis shrimp mostly broadcast feed but sometimes target feed, I don't know tank parameters but I test monthly and it's always good, I heard iodine can help them but not aure if it's a lighting issue or not, any thoughts?

 

[griss]

Can you post your water parameters, lighting, and filtration? This will help us understand the conditions of your tank and possibly make suggestions.

For water parameters, please specifically list the following:
Temperature
Ammonia
Nitrite
Nitrate
pH
Alkalinity
Calcium
Magnesium
Phosphate

 

[Moist153]

Can you post your water parameters, lighting, and filtration? This will help us understand the conditions of your tank and possibly make suggestions.

For water parameters, please specifically list the following:
Temperature
Ammonia
Nitrite
Nitrate
pH
Alkalinity
Calcium
Magnesium
Phosphate

I will have to take a sample to my local store and they test it with a fancy test kit, I tested last month and everything was in the ideal range, but the next time I go ill test it again and take a Pic.

 

[griss]

I will have to take a sample to my local store and they test it with a fancy test kit, I tested last month and everything was in the ideal range, but the next time I go ill test it again and take a Pic.

The “ideal” range has shifted over the years as we’ve evolved and learned. Since you’ve had the tank for years, your parameters may not be ideal by today’s standards. For example, we no longer strive for zero nitrate and phosphate…these parameters being zero could account for you higher nutrient Zoas and GSP no growing.

What is your filtration and lighting?