BH, changes takes time and not immediate. You'll need few weeks to see the changes. Sometimes it's so gradual and you won't notice it unless you keep a photographic record.
Andy, my place no aircon too and monthly only ard $180.
Yours 2ft with single 250W and mine 4ft with 2x250W. Seems like running bigger tank not so much diff.
I asking abt kH cos you never mentioned anything abt your kH stable or not.
If kH also need to dose and at the same time you're dosing Ca supplements then you should be tunning your CR higher instead.
They going to hatch very very soon
Wasted all not going to survive which is real pity. I already don't want to look at those eggs in my tank which my clown spawn once every 2 weeks, see already only feel sad for them.